diff --git a/cells/a2111o/sky130_fd_sc_ms__a2111o_1.spice b/cells/a2111o/sky130_fd_sc_ms__a2111o_1.spice
index 18edbd6..b2d8272 100644
--- a/cells/a2111o/sky130_fd_sc_ms__a2111o_1.spice
+++ b/cells/a2111o/sky130_fd_sc_ms__a2111o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a2111o_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a2111o_1 A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 a_80_392# A2 VPWR VPB pshort w=1e+06u l=180000u
@@ -26,4 +41,3 @@
 M1011 X a_85_136# VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=2.912e+11p pd=2.76e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/a2111o/sky130_fd_sc_ms__a2111o_2.spice b/cells/a2111o/sky130_fd_sc_ms__a2111o_2.spice
index 369651d..bb426d1 100644
--- a/cells/a2111o/sky130_fd_sc_ms__a2111o_2.spice
+++ b/cells/a2111o/sky130_fd_sc_ms__a2111o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a2111o_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a2111o_2 A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 a_633_368# B1 a_525_368# VPB pshort w=1.12e+06u l=180000u
@@ -30,4 +45,3 @@
 M1013 VGND D1 a_91_244# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2111o/sky130_fd_sc_ms__a2111o_4.spice b/cells/a2111o/sky130_fd_sc_ms__a2111o_4.spice
index c850495..9c7b7e0 100644
--- a/cells/a2111o/sky130_fd_sc_ms__a2111o_4.spice
+++ b/cells/a2111o/sky130_fd_sc_ms__a2111o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a2111o_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a2111o_4 A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 a_1013_392# A2 VPWR VPB pshort w=1e+06u l=180000u
@@ -58,4 +73,3 @@
 M1027 VGND A2 a_1210_74# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2111oi/sky130_fd_sc_ms__a2111oi_1.spice b/cells/a2111oi/sky130_fd_sc_ms__a2111oi_1.spice
index 3dcfbf7..3346090 100644
--- a/cells/a2111oi/sky130_fd_sc_ms__a2111oi_1.spice
+++ b/cells/a2111oi/sky130_fd_sc_ms__a2111oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a2111oi_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a2111oi_1 A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 a_345_368# A2 VPWR VPB pshort w=1.12e+06u l=180000u
@@ -22,4 +37,3 @@
 M1009 Y B1 VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2111oi/sky130_fd_sc_ms__a2111oi_2.spice b/cells/a2111oi/sky130_fd_sc_ms__a2111oi_2.spice
index fb84aec..a01d0d9 100644
--- a/cells/a2111oi/sky130_fd_sc_ms__a2111oi_2.spice
+++ b/cells/a2111oi/sky130_fd_sc_ms__a2111oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a2111oi_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a2111oi_2 A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 VGND C1 Y VNB nlowvt w=740000u l=150000u
@@ -36,4 +51,3 @@
 M1016 VPWR A2 a_533_368# VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2111oi/sky130_fd_sc_ms__a2111oi_4.spice b/cells/a2111oi/sky130_fd_sc_ms__a2111oi_4.spice
index d549eea..8b9f1cf 100644
--- a/cells/a2111oi/sky130_fd_sc_ms__a2111oi_4.spice
+++ b/cells/a2111oi/sky130_fd_sc_ms__a2111oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a2111oi_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a2111oi_4 A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 a_477_368# C1 a_29_368# VPB pshort w=1.12e+06u l=180000u
@@ -70,4 +85,3 @@
 M1033 Y A1 a_1228_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a211o/sky130_fd_sc_ms__a211o_1.spice b/cells/a211o/sky130_fd_sc_ms__a211o_1.spice
index 90d8110..e9f83ee 100644
--- a/cells/a211o/sky130_fd_sc_ms__a211o_1.spice
+++ b/cells/a211o/sky130_fd_sc_ms__a211o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a211o_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a211o_1 A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 VGND a_81_264# X VNB nlowvt w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR A2 a_279_392# VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a211o/sky130_fd_sc_ms__a211o_2.spice b/cells/a211o/sky130_fd_sc_ms__a211o_2.spice
index 2e08301..2ee2f2e 100644
--- a/cells/a211o/sky130_fd_sc_ms__a211o_2.spice
+++ b/cells/a211o/sky130_fd_sc_ms__a211o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a211o_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a211o_2 A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 a_317_392# A1 VPWR VPB pshort w=1e+06u l=180000u
@@ -26,4 +41,3 @@
 M1011 VPWR a_85_270# X VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a211o/sky130_fd_sc_ms__a211o_4.spice b/cells/a211o/sky130_fd_sc_ms__a211o_4.spice
index e01ab6d..9410d27 100644
--- a/cells/a211o/sky130_fd_sc_ms__a211o_4.spice
+++ b/cells/a211o/sky130_fd_sc_ms__a211o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a211o_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a211o_4 A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 a_1064_123# A2 VGND VNB nlowvt w=640000u l=150000u
@@ -50,4 +65,3 @@
 M1023 VGND A2 a_1064_123# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a211oi/sky130_fd_sc_ms__a211oi_1.spice b/cells/a211oi/sky130_fd_sc_ms__a211oi_1.spice
index 970e445..347db3b 100644
--- a/cells/a211oi/sky130_fd_sc_ms__a211oi_1.spice
+++ b/cells/a211oi/sky130_fd_sc_ms__a211oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a211oi_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a211oi_1 A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_71_368# A1 VPWR VPB pshort w=1.12e+06u l=180000u
@@ -18,4 +33,3 @@
 M1007 Y C1 VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a211oi/sky130_fd_sc_ms__a211oi_2.spice b/cells/a211oi/sky130_fd_sc_ms__a211oi_2.spice
index 523e89c..46ce1b8 100644
--- a/cells/a211oi/sky130_fd_sc_ms__a211oi_2.spice
+++ b/cells/a211oi/sky130_fd_sc_ms__a211oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a211oi_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a211oi_2 A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_38_74# A2 VGND VNB nlowvt w=740000u l=150000u
@@ -30,4 +45,3 @@
 M1013 VPWR A2 a_117_368# VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a211oi/sky130_fd_sc_ms__a211oi_4.spice b/cells/a211oi/sky130_fd_sc_ms__a211oi_4.spice
index a829e02..01bb4c0 100644
--- a/cells/a211oi/sky130_fd_sc_ms__a211oi_4.spice
+++ b/cells/a211oi/sky130_fd_sc_ms__a211oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a211oi_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a211oi_4 A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_92_74# A1 Y VNB nlowvt w=740000u l=150000u
@@ -58,4 +73,3 @@
 M1027 a_92_74# A1 Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21bo/sky130_fd_sc_ms__a21bo_1.spice b/cells/a21bo/sky130_fd_sc_ms__a21bo_1.spice
index 9d6553a..10a2eee 100644
--- a/cells/a21bo/sky130_fd_sc_ms__a21bo_1.spice
+++ b/cells/a21bo/sky130_fd_sc_ms__a21bo_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a21bo_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a21bo_1 A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 a_34_392# A1 VPWR VPB pshort w=1e+06u l=180000u
@@ -22,4 +37,3 @@
 M1009 a_194_136# A1 a_122_136# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21bo/sky130_fd_sc_ms__a21bo_2.spice b/cells/a21bo/sky130_fd_sc_ms__a21bo_2.spice
index 09400e0..4a05d8c 100644
--- a/cells/a21bo/sky130_fd_sc_ms__a21bo_2.spice
+++ b/cells/a21bo/sky130_fd_sc_ms__a21bo_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a21bo_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a21bo_2 A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 VGND a_187_244# X VNB nlowvt w=740000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_587_74# A1 a_187_244# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21bo/sky130_fd_sc_ms__a21bo_4.spice b/cells/a21bo/sky130_fd_sc_ms__a21bo_4.spice
index e60ef3f..6c0557c 100644
--- a/cells/a21bo/sky130_fd_sc_ms__a21bo_4.spice
+++ b/cells/a21bo/sky130_fd_sc_ms__a21bo_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a21bo_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a21bo_4 A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 a_184_338# a_29_392# a_596_392# VPB pshort w=1e+06u l=180000u
@@ -46,4 +61,3 @@
 M1021 X a_184_338# VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21boi/sky130_fd_sc_ms__a21boi_1.spice b/cells/a21boi/sky130_fd_sc_ms__a21boi_1.spice
index 6ff0fa8..879c233 100644
--- a/cells/a21boi/sky130_fd_sc_ms__a21boi_1.spice
+++ b/cells/a21boi/sky130_fd_sc_ms__a21boi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a21boi_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a21boi_1 A1 A2 B1_N VGND VNB VPB VPWR Y
 M1000 a_437_74# A1 Y VNB nlowvt w=740000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VPWR B1_N a_29_424# VPB pshort w=840000u l=180000u
 +  ad=0p pd=0u as=2.184e+11p ps=2.2e+06u
 .ends
-
diff --git a/cells/a21boi/sky130_fd_sc_ms__a21boi_2.spice b/cells/a21boi/sky130_fd_sc_ms__a21boi_2.spice
index 72bdab4..e2afd92 100644
--- a/cells/a21boi/sky130_fd_sc_ms__a21boi_2.spice
+++ b/cells/a21boi/sky130_fd_sc_ms__a21boi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a21boi_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a21boi_2 A1 A2 B1_N VGND VNB VPB VPWR Y
 M1000 a_436_74# A1 Y VNB nlowvt w=740000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_436_74# A2 VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21boi/sky130_fd_sc_ms__a21boi_4.spice b/cells/a21boi/sky130_fd_sc_ms__a21boi_4.spice
index d741b68..078a813 100644
--- a/cells/a21boi/sky130_fd_sc_ms__a21boi_4.spice
+++ b/cells/a21boi/sky130_fd_sc_ms__a21boi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a21boi_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a21boi_4 A1 A2 B1_N VGND VNB VPB VPWR Y
 M1000 VGND a_803_323# Y VNB nlowvt w=740000u l=150000u
@@ -56,4 +71,3 @@
 M1026 a_31_368# a_803_323# Y VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21o/sky130_fd_sc_ms__a21o_1.spice b/cells/a21o/sky130_fd_sc_ms__a21o_1.spice
index 9478df7..fe97ec7 100644
--- a/cells/a21o/sky130_fd_sc_ms__a21o_1.spice
+++ b/cells/a21o/sky130_fd_sc_ms__a21o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a21o_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a21o_1 A1 A2 B1 VGND VNB VPB VPWR X
 M1000 VGND a_81_264# X VNB nlowvt w=740000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VPWR A1 a_367_392# VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21o/sky130_fd_sc_ms__a21o_2.spice b/cells/a21o/sky130_fd_sc_ms__a21o_2.spice
index 47db081..d8eab17 100644
--- a/cells/a21o/sky130_fd_sc_ms__a21o_2.spice
+++ b/cells/a21o/sky130_fd_sc_ms__a21o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a21o_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a21o_2 A1 A2 B1 VGND VNB VPB VPWR X
 M1000 a_404_392# A2 VPWR VPB pshort w=1e+06u l=180000u
@@ -22,4 +37,3 @@
 M1009 VPWR A1 a_404_392# VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21o/sky130_fd_sc_ms__a21o_4.spice b/cells/a21o/sky130_fd_sc_ms__a21o_4.spice
index bc9c9c4..c66edb0 100644
--- a/cells/a21o/sky130_fd_sc_ms__a21o_4.spice
+++ b/cells/a21o/sky130_fd_sc_ms__a21o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a21o_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a21o_4 A1 A2 B1 VGND VNB VPB VPWR X
 M1000 a_700_74# A2 VGND VNB nlowvt w=640000u l=150000u
@@ -42,4 +57,3 @@
 M1019 VGND B1 a_91_48# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21oi/sky130_fd_sc_ms__a21oi_1.spice b/cells/a21oi/sky130_fd_sc_ms__a21oi_1.spice
index 81d9eba..c6c70c6 100644
--- a/cells/a21oi/sky130_fd_sc_ms__a21oi_1.spice
+++ b/cells/a21oi/sky130_fd_sc_ms__a21oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a21oi_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a21oi_1 A1 A2 B1 VGND VNB VPB VPWR Y
 M1000 a_29_368# A1 VPWR VPB pshort w=1.12e+06u l=180000u
@@ -14,4 +29,3 @@
 M1005 a_117_74# A2 VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21oi/sky130_fd_sc_ms__a21oi_2.spice b/cells/a21oi/sky130_fd_sc_ms__a21oi_2.spice
index 23ed402..0b33b57 100644
--- a/cells/a21oi/sky130_fd_sc_ms__a21oi_2.spice
+++ b/cells/a21oi/sky130_fd_sc_ms__a21oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a21oi_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a21oi_2 A1 A2 B1 VGND VNB VPB VPWR Y
 M1000 a_280_107# A1 Y VNB nlowvt w=740000u l=150000u
@@ -24,4 +39,3 @@
 M1010 a_131_368# A1 VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21oi/sky130_fd_sc_ms__a21oi_4.spice b/cells/a21oi/sky130_fd_sc_ms__a21oi_4.spice
index 4bf0f5e..449509a 100644
--- a/cells/a21oi/sky130_fd_sc_ms__a21oi_4.spice
+++ b/cells/a21oi/sky130_fd_sc_ms__a21oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a21oi_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a21oi_4 A1 A2 B1 VGND VNB VPB VPWR Y
 M1000 Y A1 a_84_74# VNB nlowvt w=740000u l=150000u
@@ -46,4 +61,3 @@
 M1021 Y B1 VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a221o/sky130_fd_sc_ms__a221o_1.spice b/cells/a221o/sky130_fd_sc_ms__a221o_1.spice
index f2b3072..ba3d88d 100644
--- a/cells/a221o/sky130_fd_sc_ms__a221o_1.spice
+++ b/cells/a221o/sky130_fd_sc_ms__a221o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a221o_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a221o_1 A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 VPWR a_148_260# X VPB pshort w=1.12e+06u l=180000u
@@ -26,4 +41,3 @@
 M1011 a_509_392# B2 a_313_392# VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a221o/sky130_fd_sc_ms__a221o_2.spice b/cells/a221o/sky130_fd_sc_ms__a221o_2.spice
index f4bf938..06adfdf 100644
--- a/cells/a221o/sky130_fd_sc_ms__a221o_2.spice
+++ b/cells/a221o/sky130_fd_sc_ms__a221o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a221o_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a221o_2 A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 VPWR A1 a_319_392# VPB pshort w=1e+06u l=180000u
@@ -30,4 +45,3 @@
 M1013 a_319_392# A2 VPWR VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a221o/sky130_fd_sc_ms__a221o_4.spice b/cells/a221o/sky130_fd_sc_ms__a221o_4.spice
index d94987d..442e261 100644
--- a/cells/a221o/sky130_fd_sc_ms__a221o_4.spice
+++ b/cells/a221o/sky130_fd_sc_ms__a221o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a221o_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a221o_4 A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 a_1102_392# C1 a_154_135# VPB pshort w=1e+06u l=180000u
@@ -58,4 +73,3 @@
 M1027 VGND A2 a_71_135# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a221oi/sky130_fd_sc_ms__a221oi_1.spice b/cells/a221oi/sky130_fd_sc_ms__a221oi_1.spice
index d06471d..0a42da2 100644
--- a/cells/a221oi/sky130_fd_sc_ms__a221oi_1.spice
+++ b/cells/a221oi/sky130_fd_sc_ms__a221oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a221oi_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a221oi_1 A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 Y B1 a_351_74# VNB nlowvt w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_121_368# C1 Y VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=2.912e+11p ps=2.76e+06u
 .ends
-
diff --git a/cells/a221oi/sky130_fd_sc_ms__a221oi_2.spice b/cells/a221oi/sky130_fd_sc_ms__a221oi_2.spice
index 3d1a21d..15ce333 100644
--- a/cells/a221oi/sky130_fd_sc_ms__a221oi_2.spice
+++ b/cells/a221oi/sky130_fd_sc_ms__a221oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a221oi_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a221oi_2 A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 a_297_368# A1 VPWR VPB pshort w=1.12e+06u l=180000u
@@ -42,4 +57,3 @@
 M1019 VGND C1 Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a221oi/sky130_fd_sc_ms__a221oi_4.spice b/cells/a221oi/sky130_fd_sc_ms__a221oi_4.spice
index e8d1c83..f7e5b27 100644
--- a/cells/a221oi/sky130_fd_sc_ms__a221oi_4.spice
+++ b/cells/a221oi/sky130_fd_sc_ms__a221oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a221oi_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a221oi_4 A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 a_117_368# B1 a_531_368# VPB pshort w=1.12e+06u l=180000u
@@ -82,4 +97,3 @@
 M1039 a_531_368# A1 VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a222o/sky130_fd_sc_ms__a222o_1.spice b/cells/a222o/sky130_fd_sc_ms__a222o_1.spice
index a33123f..375831b 100644
--- a/cells/a222o/sky130_fd_sc_ms__a222o_1.spice
+++ b/cells/a222o/sky130_fd_sc_ms__a222o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a222o_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a222o_1 A1 A2 B1 B2 C1 C2 VGND VNB VPB VPWR X
 M1000 VGND C2 a_119_74# VNB nlowvt w=640000u l=150000u
@@ -30,4 +45,3 @@
 M1013 X a_32_74# VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=3.136e+11p pd=2.8e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/a222o/sky130_fd_sc_ms__a222o_2.spice b/cells/a222o/sky130_fd_sc_ms__a222o_2.spice
index cdfe01a..bfe9d74 100644
--- a/cells/a222o/sky130_fd_sc_ms__a222o_2.spice
+++ b/cells/a222o/sky130_fd_sc_ms__a222o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a222o_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a222o_2 A1 A2 B1 B2 C1 C2 VGND VNB VPB VPWR X
 M1000 a_557_74# A2 VGND VNB nlowvt w=640000u l=150000u
@@ -34,4 +49,3 @@
 M1015 VGND C2 a_114_82# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a222oi/sky130_fd_sc_ms__a222oi_1.spice b/cells/a222oi/sky130_fd_sc_ms__a222oi_1.spice
index 23ded5a..76b3590 100644
--- a/cells/a222oi/sky130_fd_sc_ms__a222oi_1.spice
+++ b/cells/a222oi/sky130_fd_sc_ms__a222oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a222oi_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a222oi_1 A1 A2 B1 B2 C1 C2 VGND VNB VPB VPWR Y
 M1000 VGND C2 a_119_74# VNB nlowvt w=640000u l=150000u
@@ -26,4 +41,3 @@
 M1011 Y C2 a_119_392# VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a222oi/sky130_fd_sc_ms__a222oi_2.spice b/cells/a222oi/sky130_fd_sc_ms__a222oi_2.spice
index 9edb24b..cd119be 100644
--- a/cells/a222oi/sky130_fd_sc_ms__a222oi_2.spice
+++ b/cells/a222oi/sky130_fd_sc_ms__a222oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a222oi_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a222oi_2 A1 A2 B1 B2 C1 C2 VGND VNB VPB VPWR Y
 M1000 VGND A2 a_981_74# VNB nlowvt w=640000u l=150000u
@@ -50,4 +65,3 @@
 M1023 Y B1 a_593_74# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a22o/sky130_fd_sc_ms__a22o_1.spice b/cells/a22o/sky130_fd_sc_ms__a22o_1.spice
index 75d5603..dbc1b31 100644
--- a/cells/a22o/sky130_fd_sc_ms__a22o_1.spice
+++ b/cells/a22o/sky130_fd_sc_ms__a22o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a22o_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a22o_1 A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 a_225_392# B1 a_230_79# VNB nlowvt w=640000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR A1 a_135_392# VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a22o/sky130_fd_sc_ms__a22o_2.spice b/cells/a22o/sky130_fd_sc_ms__a22o_2.spice
index 57d5909..61dccea 100644
--- a/cells/a22o/sky130_fd_sc_ms__a22o_2.spice
+++ b/cells/a22o/sky130_fd_sc_ms__a22o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a22o_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a22o_2 A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 a_391_368# B2 a_81_48# VPB pshort w=1e+06u l=180000u
@@ -26,4 +41,3 @@
 M1011 VGND B2 a_491_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a22o/sky130_fd_sc_ms__a22o_4.spice b/cells/a22o/sky130_fd_sc_ms__a22o_4.spice
index 6115737..e84f20c 100644
--- a/cells/a22o/sky130_fd_sc_ms__a22o_4.spice
+++ b/cells/a22o/sky130_fd_sc_ms__a22o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a22o_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a22o_4 A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 a_645_120# B2 VGND VNB nlowvt w=640000u l=150000u
@@ -50,4 +65,3 @@
 M1023 VGND A2 a_1064_123# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a22oi/sky130_fd_sc_ms__a22oi_1.spice b/cells/a22oi/sky130_fd_sc_ms__a22oi_1.spice
index 814faf3..7139c61 100644
--- a/cells/a22oi/sky130_fd_sc_ms__a22oi_1.spice
+++ b/cells/a22oi/sky130_fd_sc_ms__a22oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a22oi_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a22oi_1 A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 Y B1 a_159_74# VNB nlowvt w=740000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VGND A2 a_339_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a22oi/sky130_fd_sc_ms__a22oi_2.spice b/cells/a22oi/sky130_fd_sc_ms__a22oi_2.spice
index 21404f9..69b9bc0 100644
--- a/cells/a22oi/sky130_fd_sc_ms__a22oi_2.spice
+++ b/cells/a22oi/sky130_fd_sc_ms__a22oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a22oi_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a22oi_2 A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_66_368# A1 VPWR VPB pshort w=1.12e+06u l=180000u
@@ -34,4 +49,3 @@
 M1015 a_66_368# B1 Y VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a22oi/sky130_fd_sc_ms__a22oi_4.spice b/cells/a22oi/sky130_fd_sc_ms__a22oi_4.spice
index 509672d..1e9e43a 100644
--- a/cells/a22oi/sky130_fd_sc_ms__a22oi_4.spice
+++ b/cells/a22oi/sky130_fd_sc_ms__a22oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a22oi_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a22oi_4 A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_45_368# A2 VPWR VPB pshort w=1.12e+06u l=180000u
@@ -66,4 +81,3 @@
 M1031 VPWR A1 a_45_368# VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2bb2o/sky130_fd_sc_ms__a2bb2o_1.spice b/cells/a2bb2o/sky130_fd_sc_ms__a2bb2o_1.spice
index b54f436..af44126 100644
--- a/cells/a2bb2o/sky130_fd_sc_ms__a2bb2o_1.spice
+++ b/cells/a2bb2o/sky130_fd_sc_ms__a2bb2o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a2bb2o_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a2bb2o_1 A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 VPWR a_93_264# X VPB pshort w=1.12e+06u l=180000u
@@ -26,4 +41,3 @@
 M1011 VPWR B2 a_533_392# VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2bb2o/sky130_fd_sc_ms__a2bb2o_2.spice b/cells/a2bb2o/sky130_fd_sc_ms__a2bb2o_2.spice
index 99b0168..ef2aa0a 100644
--- a/cells/a2bb2o/sky130_fd_sc_ms__a2bb2o_2.spice
+++ b/cells/a2bb2o/sky130_fd_sc_ms__a2bb2o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a2bb2o_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a2bb2o_2 A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 X a_221_74# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -30,4 +45,3 @@
 M1013 a_549_378# A2_N a_293_333# VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=2.6e+11p ps=2.52e+06u
 .ends
-
diff --git a/cells/a2bb2o/sky130_fd_sc_ms__a2bb2o_4.spice b/cells/a2bb2o/sky130_fd_sc_ms__a2bb2o_4.spice
index a110ab2..1e648be 100644
--- a/cells/a2bb2o/sky130_fd_sc_ms__a2bb2o_4.spice
+++ b/cells/a2bb2o/sky130_fd_sc_ms__a2bb2o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a2bb2o_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a2bb2o_4 A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 VGND a_162_48# X VNB nlowvt w=740000u l=150000u
@@ -48,4 +63,3 @@
 M1022 VGND A2_N a_586_94# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2bb2oi/sky130_fd_sc_ms__a2bb2oi_1.spice b/cells/a2bb2oi/sky130_fd_sc_ms__a2bb2oi_1.spice
index 0ac8568..9ae2339 100644
--- a/cells/a2bb2oi/sky130_fd_sc_ms__a2bb2oi_1.spice
+++ b/cells/a2bb2oi/sky130_fd_sc_ms__a2bb2oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a2bb2oi_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a2bb2oi_1 A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 a_126_112# A1_N VGND VNB nlowvt w=550000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND A2_N a_126_112# VNB nlowvt w=550000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2bb2oi/sky130_fd_sc_ms__a2bb2oi_2.spice b/cells/a2bb2oi/sky130_fd_sc_ms__a2bb2oi_2.spice
index 3aa0f77..48bee88 100644
--- a/cells/a2bb2oi/sky130_fd_sc_ms__a2bb2oi_2.spice
+++ b/cells/a2bb2oi/sky130_fd_sc_ms__a2bb2oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a2bb2oi_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a2bb2oi_2 A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 Y B2 a_615_74# VNB nlowvt w=740000u l=150000u
@@ -34,4 +49,3 @@
 M1015 a_212_102# A2_N a_212_392# VPB pshort w=1e+06u l=180000u
 +  ad=2.6e+11p pd=2.52e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/a2bb2oi/sky130_fd_sc_ms__a2bb2oi_4.spice b/cells/a2bb2oi/sky130_fd_sc_ms__a2bb2oi_4.spice
index 781e1ee..9b8a489 100644
--- a/cells/a2bb2oi/sky130_fd_sc_ms__a2bb2oi_4.spice
+++ b/cells/a2bb2oi/sky130_fd_sc_ms__a2bb2oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a2bb2oi_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a2bb2oi_4 A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 a_914_74# B1 VGND VNB nlowvt w=740000u l=150000u
@@ -62,4 +77,3 @@
 M1029 a_914_74# B1 VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a311o/sky130_fd_sc_ms__a311o_1.spice b/cells/a311o/sky130_fd_sc_ms__a311o_1.spice
index 059fcd3..c23ab5b 100644
--- a/cells/a311o/sky130_fd_sc_ms__a311o_1.spice
+++ b/cells/a311o/sky130_fd_sc_ms__a311o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a311o_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a311o_1 A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 a_261_392# A3 VPWR VPB pshort w=1e+06u l=180000u
@@ -26,4 +41,3 @@
 M1011 a_359_123# A2 a_264_120# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a311o/sky130_fd_sc_ms__a311o_2.spice b/cells/a311o/sky130_fd_sc_ms__a311o_2.spice
index bcf19c2..3063998 100644
--- a/cells/a311o/sky130_fd_sc_ms__a311o_2.spice
+++ b/cells/a311o/sky130_fd_sc_ms__a311o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a311o_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a311o_2 A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 VPWR a_21_270# X VPB pshort w=1.12e+06u l=180000u
@@ -30,4 +45,3 @@
 M1013 a_21_270# C1 a_663_392# VPB pshort w=1e+06u l=180000u
 +  ad=2.6e+11p pd=2.52e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/a311o/sky130_fd_sc_ms__a311o_4.spice b/cells/a311o/sky130_fd_sc_ms__a311o_4.spice
index 13145b1..0606ae3 100644
--- a/cells/a311o/sky130_fd_sc_ms__a311o_4.spice
+++ b/cells/a311o/sky130_fd_sc_ms__a311o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a311o_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a311o_4 A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 a_157_392# C1 a_69_392# VPB pshort w=1e+06u l=180000u
@@ -58,4 +73,3 @@
 M1027 a_157_392# C1 VGND VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a311oi/sky130_fd_sc_ms__a311oi_1.spice b/cells/a311oi/sky130_fd_sc_ms__a311oi_1.spice
index 791435f..de769bd 100644
--- a/cells/a311oi/sky130_fd_sc_ms__a311oi_1.spice
+++ b/cells/a311oi/sky130_fd_sc_ms__a311oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a311oi_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a311oi_1 A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_159_368# A1 VPWR VPB pshort w=1.12e+06u l=180000u
@@ -22,4 +37,3 @@
 M1009 VGND B1 Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a311oi/sky130_fd_sc_ms__a311oi_2.spice b/cells/a311oi/sky130_fd_sc_ms__a311oi_2.spice
index 737e34b..8e765b9 100644
--- a/cells/a311oi/sky130_fd_sc_ms__a311oi_2.spice
+++ b/cells/a311oi/sky130_fd_sc_ms__a311oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a311oi_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a311oi_2 A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 Y C1 VGND VNB nlowvt w=740000u l=150000u
@@ -38,4 +53,3 @@
 M1017 VPWR A3 a_130_368# VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a311oi/sky130_fd_sc_ms__a311oi_4.spice b/cells/a311oi/sky130_fd_sc_ms__a311oi_4.spice
index 42fe8cf..1dd58dc 100644
--- a/cells/a311oi/sky130_fd_sc_ms__a311oi_4.spice
+++ b/cells/a311oi/sky130_fd_sc_ms__a311oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a311oi_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a311oi_4 A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_117_368# A2 VPWR VPB pshort w=1.12e+06u l=180000u
@@ -74,4 +89,3 @@
 M1035 a_1213_368# B1 a_117_368# VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31o/sky130_fd_sc_ms__a31o_1.spice b/cells/a31o/sky130_fd_sc_ms__a31o_1.spice
index a04dcd3..19028d0 100644
--- a/cells/a31o/sky130_fd_sc_ms__a31o_1.spice
+++ b/cells/a31o/sky130_fd_sc_ms__a31o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a31o_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a31o_1 A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 VGND B1 a_81_270# VNB nlowvt w=640000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_81_270# A1 a_337_120# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31o/sky130_fd_sc_ms__a31o_2.spice b/cells/a31o/sky130_fd_sc_ms__a31o_2.spice
index 1f3cdc0..5d51f12 100644
--- a/cells/a31o/sky130_fd_sc_ms__a31o_2.spice
+++ b/cells/a31o/sky130_fd_sc_ms__a31o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a31o_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a31o_2 A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 VGND B1 a_97_296# VNB nlowvt w=740000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_97_296# A1 a_449_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31o/sky130_fd_sc_ms__a31o_4.spice b/cells/a31o/sky130_fd_sc_ms__a31o_4.spice
index dcdf12c..a82e5f1 100644
--- a/cells/a31o/sky130_fd_sc_ms__a31o_4.spice
+++ b/cells/a31o/sky130_fd_sc_ms__a31o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a31o_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a31o_4 A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 VPWR A1 a_529_392# VPB pshort w=1e+06u l=180000u
@@ -50,4 +65,3 @@
 M1023 a_529_392# A2 VPWR VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31oi/sky130_fd_sc_ms__a31oi_1.spice b/cells/a31oi/sky130_fd_sc_ms__a31oi_1.spice
index a8894a8..62939f8 100644
--- a/cells/a31oi/sky130_fd_sc_ms__a31oi_1.spice
+++ b/cells/a31oi/sky130_fd_sc_ms__a31oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a31oi_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a31oi_1 A1 A2 A3 B1 VGND VNB VPB VPWR Y
 M1000 VPWR A2 a_139_368# VPB pshort w=1.12e+06u l=180000u
@@ -18,4 +33,3 @@
 M1007 a_139_368# A3 VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31oi/sky130_fd_sc_ms__a31oi_2.spice b/cells/a31oi/sky130_fd_sc_ms__a31oi_2.spice
index 8809b86..d5e7e15 100644
--- a/cells/a31oi/sky130_fd_sc_ms__a31oi_2.spice
+++ b/cells/a31oi/sky130_fd_sc_ms__a31oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a31oi_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a31oi_2 A1 A2 A3 B1 VGND VNB VPB VPWR Y
 M1000 a_200_74# A1 Y VNB nlowvt w=740000u l=150000u
@@ -32,4 +47,3 @@
 M1014 a_27_368# A1 VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31oi/sky130_fd_sc_ms__a31oi_4.spice b/cells/a31oi/sky130_fd_sc_ms__a31oi_4.spice
index aa5b152..24820f3 100644
--- a/cells/a31oi/sky130_fd_sc_ms__a31oi_4.spice
+++ b/cells/a31oi/sky130_fd_sc_ms__a31oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a31oi_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a31oi_4 A1 A2 A3 B1 VGND VNB VPB VPWR Y
 M1000 Y A1 a_475_74# VNB nlowvt w=740000u l=150000u
@@ -62,4 +77,3 @@
 M1029 a_30_74# A3 VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a32o/sky130_fd_sc_ms__a32o_1.spice b/cells/a32o/sky130_fd_sc_ms__a32o_1.spice
index a77ebb5..2ca5c1e 100644
--- a/cells/a32o/sky130_fd_sc_ms__a32o_1.spice
+++ b/cells/a32o/sky130_fd_sc_ms__a32o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a32o_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a32o_1 A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 a_247_368# B2 a_84_48# VPB pshort w=1e+06u l=180000u
@@ -26,4 +41,3 @@
 M1011 a_84_48# A1 a_337_94# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a32o/sky130_fd_sc_ms__a32o_2.spice b/cells/a32o/sky130_fd_sc_ms__a32o_2.spice
index e01b25a..3caea74 100644
--- a/cells/a32o/sky130_fd_sc_ms__a32o_2.spice
+++ b/cells/a32o/sky130_fd_sc_ms__a32o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a32o_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a32o_2 A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 a_349_368# A1 VPWR VPB pshort w=1e+06u l=180000u
@@ -30,4 +45,3 @@
 M1013 a_349_368# B2 a_45_264# VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a32o/sky130_fd_sc_ms__a32o_4.spice b/cells/a32o/sky130_fd_sc_ms__a32o_4.spice
index ac91909..567f14a 100644
--- a/cells/a32o/sky130_fd_sc_ms__a32o_4.spice
+++ b/cells/a32o/sky130_fd_sc_ms__a32o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a32o_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a32o_4 A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 a_587_110# B2 VGND VNB nlowvt w=640000u l=150000u
@@ -58,4 +73,3 @@
 M1027 VPWR A1 a_509_392# VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a32oi/sky130_fd_sc_ms__a32oi_1.spice b/cells/a32oi/sky130_fd_sc_ms__a32oi_1.spice
index 3f814d2..3f691dd 100644
--- a/cells/a32oi/sky130_fd_sc_ms__a32oi_1.spice
+++ b/cells/a32oi/sky130_fd_sc_ms__a32oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a32oi_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a32oi_1 A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 Y B1 a_119_74# VNB nlowvt w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_469_74# A2 a_391_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a32oi/sky130_fd_sc_ms__a32oi_2.spice b/cells/a32oi/sky130_fd_sc_ms__a32oi_2.spice
index 7c86ede..aa77cde 100644
--- a/cells/a32oi/sky130_fd_sc_ms__a32oi_2.spice
+++ b/cells/a32oi/sky130_fd_sc_ms__a32oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a32oi_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a32oi_2 A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 Y B2 a_27_368# VPB pshort w=1.12e+06u l=180000u
@@ -42,4 +57,3 @@
 M1019 VPWR A2 a_27_368# VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a32oi/sky130_fd_sc_ms__a32oi_4.spice b/cells/a32oi/sky130_fd_sc_ms__a32oi_4.spice
index 6b82e17..8d15295 100644
--- a/cells/a32oi/sky130_fd_sc_ms__a32oi_4.spice
+++ b/cells/a32oi/sky130_fd_sc_ms__a32oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a32oi_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a32oi_4 A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 Y B2 a_27_368# VPB pshort w=1.12e+06u l=180000u
@@ -82,4 +97,3 @@
 M1039 a_1313_74# A3 VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41o/sky130_fd_sc_ms__a41o_1.spice b/cells/a41o/sky130_fd_sc_ms__a41o_1.spice
index 2aabe0f..dc6ebf5 100644
--- a/cells/a41o/sky130_fd_sc_ms__a41o_1.spice
+++ b/cells/a41o/sky130_fd_sc_ms__a41o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a41o_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a41o_1 A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 a_543_74# A2 a_449_74# VNB nlowvt w=740000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VPWR A1 a_357_392# VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41o/sky130_fd_sc_ms__a41o_2.spice b/cells/a41o/sky130_fd_sc_ms__a41o_2.spice
index b742a74..0b58bb5 100644
--- a/cells/a41o/sky130_fd_sc_ms__a41o_2.spice
+++ b/cells/a41o/sky130_fd_sc_ms__a41o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a41o_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a41o_2 A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 VPWR a_441_74# X VPB pshort w=1.12e+06u l=180000u
@@ -30,4 +45,3 @@
 M1013 a_27_392# A1 VPWR VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41o/sky130_fd_sc_ms__a41o_4.spice b/cells/a41o/sky130_fd_sc_ms__a41o_4.spice
index 43076aa..dcf9c17 100644
--- a/cells/a41o/sky130_fd_sc_ms__a41o_4.spice
+++ b/cells/a41o/sky130_fd_sc_ms__a41o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a41o_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a41o_4 A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 a_113_98# B1 a_27_392# VPB pshort w=1e+06u l=180000u
@@ -58,4 +73,3 @@
 M1027 a_27_392# B1 a_113_98# VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41oi/sky130_fd_sc_ms__a41oi_1.spice b/cells/a41oi/sky130_fd_sc_ms__a41oi_1.spice
index fbe870e..3a179a8 100644
--- a/cells/a41oi/sky130_fd_sc_ms__a41oi_1.spice
+++ b/cells/a41oi/sky130_fd_sc_ms__a41oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a41oi_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a41oi_1 A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 VPWR A2 a_119_368# VPB pshort w=1.12e+06u l=180000u
@@ -22,4 +37,3 @@
 M1009 a_119_368# A3 VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41oi/sky130_fd_sc_ms__a41oi_2.spice b/cells/a41oi/sky130_fd_sc_ms__a41oi_2.spice
index 6f67dbd..233d036 100644
--- a/cells/a41oi/sky130_fd_sc_ms__a41oi_2.spice
+++ b/cells/a41oi/sky130_fd_sc_ms__a41oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a41oi_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a41oi_2 A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 a_27_368# A3 VPWR VPB pshort w=1.12e+06u l=180000u
@@ -40,4 +55,3 @@
 M1018 a_239_74# A1 Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41oi/sky130_fd_sc_ms__a41oi_4.spice b/cells/a41oi/sky130_fd_sc_ms__a41oi_4.spice
index dce6589..e865f4d 100644
--- a/cells/a41oi/sky130_fd_sc_ms__a41oi_4.spice
+++ b/cells/a41oi/sky130_fd_sc_ms__a41oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__a41oi_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__a41oi_4 A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 a_27_368# A1 VPWR VPB pshort w=1.12e+06u l=180000u
@@ -78,4 +93,3 @@
 M1037 a_27_368# A4 VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and2/sky130_fd_sc_ms__and2_1.spice b/cells/and2/sky130_fd_sc_ms__and2_1.spice
index 3c23bac..8d41310 100644
--- a/cells/and2/sky130_fd_sc_ms__and2_1.spice
+++ b/cells/and2/sky130_fd_sc_ms__and2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__and2_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__and2_1 A B VGND VNB VPB VPWR X
 M1000 a_56_136# A VPWR VPB pshort w=840000u l=180000u
@@ -14,4 +29,3 @@
 M1005 X a_56_136# VGND VNB nlowvt w=740000u l=150000u
 +  ad=2.109e+11p pd=2.05e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/and2/sky130_fd_sc_ms__and2_2.spice b/cells/and2/sky130_fd_sc_ms__and2_2.spice
index c251cc6..29a4c30 100644
--- a/cells/and2/sky130_fd_sc_ms__and2_2.spice
+++ b/cells/and2/sky130_fd_sc_ms__and2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__and2_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__and2_2 A B VGND VNB VPB VPWR X
 M1000 VPWR B a_31_74# VPB pshort w=1e+06u l=180000u
@@ -18,4 +33,3 @@
 M1007 VGND a_31_74# X VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and2/sky130_fd_sc_ms__and2_4.spice b/cells/and2/sky130_fd_sc_ms__and2_4.spice
index ac9024b..0711eef 100644
--- a/cells/and2/sky130_fd_sc_ms__and2_4.spice
+++ b/cells/and2/sky130_fd_sc_ms__and2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__and2_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__and2_4 A B VGND VNB VPB VPWR X
 M1000 VGND a_83_269# X VNB nlowvt w=740000u l=150000u
@@ -34,4 +49,3 @@
 M1015 VPWR B a_83_269# VPB pshort w=840000u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and2b/sky130_fd_sc_ms__and2b_1.spice b/cells/and2b/sky130_fd_sc_ms__and2b_1.spice
index 5af0f4e..b89f7d4 100644
--- a/cells/and2b/sky130_fd_sc_ms__and2b_1.spice
+++ b/cells/and2b/sky130_fd_sc_ms__and2b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__and2b_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__and2b_1 A_N B VGND VNB VPB VPWR X
 M1000 VGND B a_353_98# VNB nlowvt w=640000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VPWR B a_266_98# VPB pshort w=840000u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and2b/sky130_fd_sc_ms__and2b_2.spice b/cells/and2b/sky130_fd_sc_ms__and2b_2.spice
index e8c144e..2814d2d 100644
--- a/cells/and2b/sky130_fd_sc_ms__and2b_2.spice
+++ b/cells/and2b/sky130_fd_sc_ms__and2b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__and2b_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__and2b_2 A_N B VGND VNB VPB VPWR X
 M1000 a_505_74# B VGND VNB nlowvt w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 X a_198_48# VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and2b/sky130_fd_sc_ms__and2b_4.spice b/cells/and2b/sky130_fd_sc_ms__and2b_4.spice
index f7a3c06..e12890c 100644
--- a/cells/and2b/sky130_fd_sc_ms__and2b_4.spice
+++ b/cells/and2b/sky130_fd_sc_ms__and2b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__and2b_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__and2b_4 A_N B VGND VNB VPB VPWR X
 M1000 VPWR B a_221_424# VPB pshort w=840000u l=180000u
@@ -38,4 +53,3 @@
 M1017 a_221_424# B VPWR VPB pshort w=840000u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and3/sky130_fd_sc_ms__and3_1.spice b/cells/and3/sky130_fd_sc_ms__and3_1.spice
index 3f36ec5..d083ed6 100644
--- a/cells/and3/sky130_fd_sc_ms__and3_1.spice
+++ b/cells/and3/sky130_fd_sc_ms__and3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__and3_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__and3_1 A B C VGND VNB VPB VPWR X
 M1000 X a_27_398# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -18,4 +33,3 @@
 M1007 X a_27_398# VGND VNB nlowvt w=740000u l=150000u
 +  ad=2.109e+11p pd=2.05e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/and3/sky130_fd_sc_ms__and3_2.spice b/cells/and3/sky130_fd_sc_ms__and3_2.spice
index 5c6a800..093f6cd 100644
--- a/cells/and3/sky130_fd_sc_ms__and3_2.spice
+++ b/cells/and3/sky130_fd_sc_ms__and3_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__and3_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__and3_2 A B C VGND VNB VPB VPWR X
 M1000 X a_41_384# VGND VNB nlowvt w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND a_41_384# X VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and3/sky130_fd_sc_ms__and3_4.spice b/cells/and3/sky130_fd_sc_ms__and3_4.spice
index bb3b610..4deaa03 100644
--- a/cells/and3/sky130_fd_sc_ms__and3_4.spice
+++ b/cells/and3/sky130_fd_sc_ms__and3_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__and3_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__and3_4 A B C VGND VNB VPB VPWR X
 M1000 a_686_74# B a_489_74# VNB nlowvt w=640000u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_686_74# A a_83_260# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and3b/sky130_fd_sc_ms__and3b_1.spice b/cells/and3b/sky130_fd_sc_ms__and3b_1.spice
index 838dcc2..4951fc7 100644
--- a/cells/and3b/sky130_fd_sc_ms__and3b_1.spice
+++ b/cells/and3b/sky130_fd_sc_ms__and3b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__and3b_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__and3b_1 A_N B C VGND VNB VPB VPWR X
 M1000 a_266_94# B VPWR VPB pshort w=840000u l=180000u
@@ -22,4 +37,3 @@
 M1009 VPWR a_114_74# a_266_94# VPB pshort w=840000u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and3b/sky130_fd_sc_ms__and3b_2.spice b/cells/and3b/sky130_fd_sc_ms__and3b_2.spice
index 8b061f0..958d2ee 100644
--- a/cells/and3b/sky130_fd_sc_ms__and3b_2.spice
+++ b/cells/and3b/sky130_fd_sc_ms__and3b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__and3b_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__and3b_2 A_N B C VGND VNB VPB VPWR X
 M1000 VGND C a_454_74# VNB nlowvt w=740000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VPWR a_284_368# X VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and3b/sky130_fd_sc_ms__and3b_4.spice b/cells/and3b/sky130_fd_sc_ms__and3b_4.spice
index 846a261..062e3dd 100644
--- a/cells/and3b/sky130_fd_sc_ms__and3b_4.spice
+++ b/cells/and3b/sky130_fd_sc_ms__and3b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__and3b_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__and3b_4 A_N B C VGND VNB VPB VPWR X
 M1000 VPWR A_N a_27_74# VPB pshort w=1e+06u l=180000u
@@ -46,4 +61,3 @@
 M1021 X a_301_368# VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4/sky130_fd_sc_ms__and4_1.spice b/cells/and4/sky130_fd_sc_ms__and4_1.spice
index b6c5e3c..9b6424f 100644
--- a/cells/and4/sky130_fd_sc_ms__and4_1.spice
+++ b/cells/and4/sky130_fd_sc_ms__and4_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__and4_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__and4_1 A B C D VGND VNB VPB VPWR X
 M1000 VPWR B a_96_74# VPB pshort w=840000u l=180000u
@@ -22,4 +37,3 @@
 M1009 a_179_74# A a_96_74# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=1.696e+11p ps=1.81e+06u
 .ends
-
diff --git a/cells/and4/sky130_fd_sc_ms__and4_2.spice b/cells/and4/sky130_fd_sc_ms__and4_2.spice
index b9465f0..fb28e48 100644
--- a/cells/and4/sky130_fd_sc_ms__and4_2.spice
+++ b/cells/and4/sky130_fd_sc_ms__and4_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__and4_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__and4_2 A B C D VGND VNB VPB VPWR X
 M1000 a_221_74# B a_143_74# VNB nlowvt w=740000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_335_74# C a_221_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4/sky130_fd_sc_ms__and4_4.spice b/cells/and4/sky130_fd_sc_ms__and4_4.spice
index 26e55a6..0e6431d 100644
--- a/cells/and4/sky130_fd_sc_ms__and4_4.spice
+++ b/cells/and4/sky130_fd_sc_ms__and4_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__and4_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__and4_4 A B C D VGND VNB VPB VPWR X
 M1000 X a_119_392# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -50,4 +65,3 @@
 M1023 VGND a_119_392# X VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4b/sky130_fd_sc_ms__and4b_1.spice b/cells/and4b/sky130_fd_sc_ms__and4b_1.spice
index 72d775b..09b1c23 100644
--- a/cells/and4b/sky130_fd_sc_ms__and4b_1.spice
+++ b/cells/and4b/sky130_fd_sc_ms__and4b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__and4b_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__and4b_1 A_N B C D VGND VNB VPB VPWR X
 M1000 VGND D a_526_139# VNB nlowvt w=640000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_526_139# C a_448_139# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4b/sky130_fd_sc_ms__and4b_2.spice b/cells/and4b/sky130_fd_sc_ms__and4b_2.spice
index b1bd9a5..213dc52 100644
--- a/cells/and4b/sky130_fd_sc_ms__and4b_2.spice
+++ b/cells/and4b/sky130_fd_sc_ms__and4b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__and4b_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__and4b_2 A_N B C D VGND VNB VPB VPWR X
 M1000 a_459_74# D VGND VNB nlowvt w=740000u l=150000u
@@ -30,4 +45,3 @@
 M1013 X a_186_48# VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4b/sky130_fd_sc_ms__and4b_4.spice b/cells/and4b/sky130_fd_sc_ms__and4b_4.spice
index dba4bf4..1e90f77 100644
--- a/cells/and4b/sky130_fd_sc_ms__and4b_4.spice
+++ b/cells/and4b/sky130_fd_sc_ms__and4b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__and4b_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__and4b_4 A_N B C D VGND VNB VPB VPWR X
 M1000 a_664_125# C a_751_125# VNB nlowvt w=640000u l=150000u
@@ -54,4 +69,3 @@
 M1025 X a_199_294# VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4bb/sky130_fd_sc_ms__and4bb_1.spice b/cells/and4bb/sky130_fd_sc_ms__and4bb_1.spice
index 90f01e2..efe2092 100644
--- a/cells/and4bb/sky130_fd_sc_ms__and4bb_1.spice
+++ b/cells/and4bb/sky130_fd_sc_ms__and4bb_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__and4bb_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__and4bb_1 A_N B_N C D VGND VNB VPB VPWR X
 M1000 VGND D a_647_74# VNB nlowvt w=640000u l=150000u
@@ -30,4 +45,3 @@
 M1013 VGND A_N a_27_74# VNB nlowvt w=550000u l=150000u
 +  ad=0p pd=0u as=1.5675e+11p ps=1.67e+06u
 .ends
-
diff --git a/cells/and4bb/sky130_fd_sc_ms__and4bb_2.spice b/cells/and4bb/sky130_fd_sc_ms__and4bb_2.spice
index b293276..04ca125 100644
--- a/cells/and4bb/sky130_fd_sc_ms__and4bb_2.spice
+++ b/cells/and4bb/sky130_fd_sc_ms__and4bb_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__and4bb_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__and4bb_2 A_N B_N C D VGND VNB VPB VPWR X
 M1000 a_225_82# C VPWR VPB pshort w=1e+06u l=180000u
@@ -34,4 +49,3 @@
 M1015 VPWR A_N a_27_74# VPB pshort w=840000u l=180000u
 +  ad=0p pd=0u as=2.352e+11p ps=2.24e+06u
 .ends
-
diff --git a/cells/and4bb/sky130_fd_sc_ms__and4bb_4.spice b/cells/and4bb/sky130_fd_sc_ms__and4bb_4.spice
index 67c4c8c..02f173e 100644
--- a/cells/and4bb/sky130_fd_sc_ms__and4bb_4.spice
+++ b/cells/and4bb/sky130_fd_sc_ms__and4bb_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__and4bb_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__and4bb_4 A_N B_N C D VGND VNB VPB VPWR X
 M1000 a_685_140# a_27_74# a_412_140# VNB nlowvt w=640000u l=150000u
@@ -58,4 +73,3 @@
 M1027 a_412_140# a_200_74# a_475_388# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/buf/sky130_fd_sc_ms__buf_1.spice b/cells/buf/sky130_fd_sc_ms__buf_1.spice
index f8783fc..834c485 100644
--- a/cells/buf/sky130_fd_sc_ms__buf_1.spice
+++ b/cells/buf/sky130_fd_sc_ms__buf_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__buf_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__buf_1 A VGND VNB VPB VPWR X
 M1000 X a_27_164# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -10,4 +25,3 @@
 M1003 X a_27_164# VGND VNB nlowvt w=740000u l=150000u
 +  ad=2.109e+11p pd=2.05e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/buf/sky130_fd_sc_ms__buf_16.spice b/cells/buf/sky130_fd_sc_ms__buf_16.spice
index d9b5ad5..fc1bd92 100644
--- a/cells/buf/sky130_fd_sc_ms__buf_16.spice
+++ b/cells/buf/sky130_fd_sc_ms__buf_16.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__buf_16.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__buf_16 A VGND VNB VPB VPWR X
 M1000 a_83_260# A VGND VNB nlowvt w=740000u l=150000u
@@ -90,4 +105,3 @@
 M1043 a_83_260# A VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/buf/sky130_fd_sc_ms__buf_2.spice b/cells/buf/sky130_fd_sc_ms__buf_2.spice
index 3ba8750..6958074 100644
--- a/cells/buf/sky130_fd_sc_ms__buf_2.spice
+++ b/cells/buf/sky130_fd_sc_ms__buf_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__buf_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__buf_2 A VGND VNB VPB VPWR X
 M1000 X a_21_260# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -14,4 +29,3 @@
 M1005 X a_21_260# VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/buf/sky130_fd_sc_ms__buf_4.spice b/cells/buf/sky130_fd_sc_ms__buf_4.spice
index aa054f9..8c226ee 100644
--- a/cells/buf/sky130_fd_sc_ms__buf_4.spice
+++ b/cells/buf/sky130_fd_sc_ms__buf_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__buf_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__buf_4 A VGND VNB VPB VPWR X
 M1000 VGND a_86_260# X VNB nlowvt w=740000u l=150000u
@@ -24,4 +39,3 @@
 M1010 X a_86_260# VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/buf/sky130_fd_sc_ms__buf_8.spice b/cells/buf/sky130_fd_sc_ms__buf_8.spice
index e9fb8e3..943a2aa 100644
--- a/cells/buf/sky130_fd_sc_ms__buf_8.spice
+++ b/cells/buf/sky130_fd_sc_ms__buf_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__buf_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__buf_8 A VGND VNB VPB VPWR X
 M1000 X a_27_74# VGND VNB nlowvt w=740000u l=150000u
@@ -46,4 +61,3 @@
 M1021 X a_27_74# VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/bufbuf/sky130_fd_sc_ms__bufbuf_16.spice b/cells/bufbuf/sky130_fd_sc_ms__bufbuf_16.spice
index 3b255c9..c4dfa31 100644
--- a/cells/bufbuf/sky130_fd_sc_ms__bufbuf_16.spice
+++ b/cells/bufbuf/sky130_fd_sc_ms__bufbuf_16.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__bufbuf_16.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__bufbuf_16 A VGND VNB VPB VPWR X
 M1000 a_588_74# a_203_74# VGND VNB nlowvt w=740000u l=150000u
@@ -106,4 +121,3 @@
 M1051 a_203_74# a_27_368# VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/bufbuf/sky130_fd_sc_ms__bufbuf_8.spice b/cells/bufbuf/sky130_fd_sc_ms__bufbuf_8.spice
index eda3b97..6f83e85 100644
--- a/cells/bufbuf/sky130_fd_sc_ms__bufbuf_8.spice
+++ b/cells/bufbuf/sky130_fd_sc_ms__bufbuf_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__bufbuf_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__bufbuf_8 A VGND VNB VPB VPWR X
 M1000 a_224_368# a_27_112# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -54,4 +69,3 @@
 M1025 X a_334_368# VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/bufinv/sky130_fd_sc_ms__bufinv_16.spice b/cells/bufinv/sky130_fd_sc_ms__bufinv_16.spice
index 9c6f238..c9e603c 100644
--- a/cells/bufinv/sky130_fd_sc_ms__bufinv_16.spice
+++ b/cells/bufinv/sky130_fd_sc_ms__bufinv_16.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__bufinv_16.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__bufinv_16 A VGND VNB VPB VPWR Y
 M1000 a_27_74# A VGND VNB nlowvt w=740000u l=150000u
@@ -102,4 +117,3 @@
 M1049 a_384_74# a_27_74# VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/bufinv/sky130_fd_sc_ms__bufinv_8.spice b/cells/bufinv/sky130_fd_sc_ms__bufinv_8.spice
index f30fac1..98a3404 100644
--- a/cells/bufinv/sky130_fd_sc_ms__bufinv_8.spice
+++ b/cells/bufinv/sky130_fd_sc_ms__bufinv_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__bufinv_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__bufinv_8 A VGND VNB VPB VPWR Y
 M1000 a_183_48# a_27_368# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -50,4 +65,3 @@
 M1023 VGND A a_27_368# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=2.109e+11p ps=2.05e+06u
 .ends
-
diff --git a/cells/clkbuf/sky130_fd_sc_ms__clkbuf_1.spice b/cells/clkbuf/sky130_fd_sc_ms__clkbuf_1.spice
index 286ff69..6820afc 100644
--- a/cells/clkbuf/sky130_fd_sc_ms__clkbuf_1.spice
+++ b/cells/clkbuf/sky130_fd_sc_ms__clkbuf_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__clkbuf_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__clkbuf_1 A VGND VNB VPB VPWR X
 M1000 X a_27_74# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -10,4 +25,3 @@
 M1003 VGND A a_27_74# VNB nlowvt w=420000u l=150000u
 +  ad=0p pd=0u as=1.197e+11p ps=1.41e+06u
 .ends
-
diff --git a/cells/clkbuf/sky130_fd_sc_ms__clkbuf_16.spice b/cells/clkbuf/sky130_fd_sc_ms__clkbuf_16.spice
index 296e740..adae9a2 100644
--- a/cells/clkbuf/sky130_fd_sc_ms__clkbuf_16.spice
+++ b/cells/clkbuf/sky130_fd_sc_ms__clkbuf_16.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__clkbuf_16.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__clkbuf_16 A VGND VNB VPB VPWR X
 M1000 a_114_74# A VGND VNB nlowvt w=420000u l=150000u
@@ -82,4 +97,3 @@
 M1039 VPWR a_114_74# X VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkbuf/sky130_fd_sc_ms__clkbuf_2.spice b/cells/clkbuf/sky130_fd_sc_ms__clkbuf_2.spice
index 7e5a1f4..38d0b62 100644
--- a/cells/clkbuf/sky130_fd_sc_ms__clkbuf_2.spice
+++ b/cells/clkbuf/sky130_fd_sc_ms__clkbuf_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__clkbuf_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__clkbuf_2 A VGND VNB VPB VPWR X
 M1000 X a_43_192# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -14,4 +29,3 @@
 M1005 VGND a_43_192# X VNB nlowvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkbuf/sky130_fd_sc_ms__clkbuf_4.spice b/cells/clkbuf/sky130_fd_sc_ms__clkbuf_4.spice
index fc01a1e..786dee1 100644
--- a/cells/clkbuf/sky130_fd_sc_ms__clkbuf_4.spice
+++ b/cells/clkbuf/sky130_fd_sc_ms__clkbuf_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__clkbuf_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__clkbuf_4 A VGND VNB VPB VPWR X
 M1000 VGND a_83_270# X VNB nlowvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND a_83_270# X VNB nlowvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkbuf/sky130_fd_sc_ms__clkbuf_8.spice b/cells/clkbuf/sky130_fd_sc_ms__clkbuf_8.spice
index a723071..aa06f15 100644
--- a/cells/clkbuf/sky130_fd_sc_ms__clkbuf_8.spice
+++ b/cells/clkbuf/sky130_fd_sc_ms__clkbuf_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__clkbuf_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__clkbuf_8 A VGND VNB VPB VPWR X
 M1000 VGND a_128_74# X VNB nlowvt w=420000u l=150000u
@@ -42,4 +57,3 @@
 M1019 X a_128_74# VGND VNB nlowvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkdlyinv3sd1/sky130_fd_sc_ms__clkdlyinv3sd1_1.spice b/cells/clkdlyinv3sd1/sky130_fd_sc_ms__clkdlyinv3sd1_1.spice
index 8ba1fd8..9d2ac0c 100644
--- a/cells/clkdlyinv3sd1/sky130_fd_sc_ms__clkdlyinv3sd1_1.spice
+++ b/cells/clkdlyinv3sd1/sky130_fd_sc_ms__clkdlyinv3sd1_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__clkdlyinv3sd1_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__clkdlyinv3sd1_1 A VGND VNB VPB VPWR Y
 M1000 Y a_288_74# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -14,4 +29,3 @@
 M1005 Y a_288_74# VGND VNB nlowvt w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/clkdlyinv3sd2/sky130_fd_sc_ms__clkdlyinv3sd2_1.spice b/cells/clkdlyinv3sd2/sky130_fd_sc_ms__clkdlyinv3sd2_1.spice
index 4fc7148..56f048c 100644
--- a/cells/clkdlyinv3sd2/sky130_fd_sc_ms__clkdlyinv3sd2_1.spice
+++ b/cells/clkdlyinv3sd2/sky130_fd_sc_ms__clkdlyinv3sd2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__clkdlyinv3sd2_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__clkdlyinv3sd2_1 A VGND VNB VPB VPWR Y
 M1000 Y a_288_74# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -14,4 +29,3 @@
 M1005 Y a_288_74# VGND VNB nlowvt w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/clkdlyinv3sd3/sky130_fd_sc_ms__clkdlyinv3sd3_1.spice b/cells/clkdlyinv3sd3/sky130_fd_sc_ms__clkdlyinv3sd3_1.spice
index ca1bc70..6d32c0e 100644
--- a/cells/clkdlyinv3sd3/sky130_fd_sc_ms__clkdlyinv3sd3_1.spice
+++ b/cells/clkdlyinv3sd3/sky130_fd_sc_ms__clkdlyinv3sd3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__clkdlyinv3sd3_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__clkdlyinv3sd3_1 A VGND VNB VPB VPWR Y
 M1000 a_288_74# a_28_74# VPWR VPB pshort w=1e+06u l=500000u
@@ -14,4 +29,3 @@
 M1005 Y a_288_74# VGND VNB nlowvt w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/clkdlyinv5sd1/sky130_fd_sc_ms__clkdlyinv5sd1_1.spice b/cells/clkdlyinv5sd1/sky130_fd_sc_ms__clkdlyinv5sd1_1.spice
index c26a82e..e230033 100644
--- a/cells/clkdlyinv5sd1/sky130_fd_sc_ms__clkdlyinv5sd1_1.spice
+++ b/cells/clkdlyinv5sd1/sky130_fd_sc_ms__clkdlyinv5sd1_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__clkdlyinv5sd1_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__clkdlyinv5sd1_1 A VGND VNB VPB VPWR Y
 M1000 a_549_74# a_288_74# VPWR VPB pshort w=1e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_288_74# a_28_74# VGND VNB nlowvt w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/clkdlyinv5sd2/sky130_fd_sc_ms__clkdlyinv5sd2_1.spice b/cells/clkdlyinv5sd2/sky130_fd_sc_ms__clkdlyinv5sd2_1.spice
index b9daf2b..6cee160 100644
--- a/cells/clkdlyinv5sd2/sky130_fd_sc_ms__clkdlyinv5sd2_1.spice
+++ b/cells/clkdlyinv5sd2/sky130_fd_sc_ms__clkdlyinv5sd2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__clkdlyinv5sd2_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__clkdlyinv5sd2_1 A VGND VNB VPB VPWR Y
 M1000 a_549_74# a_288_74# VGND VNB nlowvt w=420000u l=180000u
@@ -22,4 +37,3 @@
 M1009 a_288_74# a_28_74# VPWR VPB pshort w=1e+06u l=250000u
 +  ad=2.6e+11p pd=2.52e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/clkdlyinv5sd3/sky130_fd_sc_ms__clkdlyinv5sd3_1.spice b/cells/clkdlyinv5sd3/sky130_fd_sc_ms__clkdlyinv5sd3_1.spice
index 9fa01fc..8d30270 100644
--- a/cells/clkdlyinv5sd3/sky130_fd_sc_ms__clkdlyinv5sd3_1.spice
+++ b/cells/clkdlyinv5sd3/sky130_fd_sc_ms__clkdlyinv5sd3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__clkdlyinv5sd3_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__clkdlyinv5sd3_1 A VGND VNB VPB VPWR Y
 M1000 VPWR a_549_74# a_682_74# VPB pshort w=1e+06u l=500000u
@@ -22,4 +37,3 @@
 M1009 Y a_682_74# VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=2.968e+11p pd=2.77e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/clkinv/sky130_fd_sc_ms__clkinv_1.spice b/cells/clkinv/sky130_fd_sc_ms__clkinv_1.spice
index 8634cbb..a2c2a0e 100644
--- a/cells/clkinv/sky130_fd_sc_ms__clkinv_1.spice
+++ b/cells/clkinv/sky130_fd_sc_ms__clkinv_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__clkinv_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__clkinv_1 A VGND VNB VPB VPWR Y
 M1000 Y A VGND VNB nlowvt w=420000u l=150000u
@@ -8,4 +23,3 @@
 M1002 VPWR A Y VPB pshort w=840000u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkinv/sky130_fd_sc_ms__clkinv_16.spice b/cells/clkinv/sky130_fd_sc_ms__clkinv_16.spice
index 53760a5..3ee3847 100644
--- a/cells/clkinv/sky130_fd_sc_ms__clkinv_16.spice
+++ b/cells/clkinv/sky130_fd_sc_ms__clkinv_16.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__clkinv_16.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__clkinv_16 A VGND VNB VPB VPWR Y
 M1000 Y A VPWR VPB pshort w=1.12e+06u l=180000u
@@ -82,4 +97,3 @@
 M1039 VPWR A Y VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkinv/sky130_fd_sc_ms__clkinv_2.spice b/cells/clkinv/sky130_fd_sc_ms__clkinv_2.spice
index a8c2d22..82c3f5f 100644
--- a/cells/clkinv/sky130_fd_sc_ms__clkinv_2.spice
+++ b/cells/clkinv/sky130_fd_sc_ms__clkinv_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__clkinv_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__clkinv_2 A VGND VNB VPB VPWR Y
 M1000 VPWR A Y VPB pshort w=1.12e+06u l=180000u
@@ -12,4 +27,3 @@
 M1004 Y A VGND VNB nlowvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkinv/sky130_fd_sc_ms__clkinv_4.spice b/cells/clkinv/sky130_fd_sc_ms__clkinv_4.spice
index 302b77a..5c59319 100644
--- a/cells/clkinv/sky130_fd_sc_ms__clkinv_4.spice
+++ b/cells/clkinv/sky130_fd_sc_ms__clkinv_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__clkinv_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__clkinv_4 A VGND VNB VPB VPWR Y
 M1000 Y A VGND VNB nlowvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND A Y VNB nlowvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkinv/sky130_fd_sc_ms__clkinv_8.spice b/cells/clkinv/sky130_fd_sc_ms__clkinv_8.spice
index 4989a3f..5c642b4 100644
--- a/cells/clkinv/sky130_fd_sc_ms__clkinv_8.spice
+++ b/cells/clkinv/sky130_fd_sc_ms__clkinv_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__clkinv_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__clkinv_8 A VGND VNB VPB VPWR Y
 M1000 Y A VGND VNB nlowvt w=420000u l=150000u
@@ -42,4 +57,3 @@
 M1019 Y A VGND VNB nlowvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/conb/sky130_fd_sc_ms__conb_1.spice b/cells/conb/sky130_fd_sc_ms__conb_1.spice
index 3fb1e14..b2929a7 100644
--- a/cells/conb/sky130_fd_sc_ms__conb_1.spice
+++ b/cells/conb/sky130_fd_sc_ms__conb_1.spice
@@ -1,7 +1,21 @@
-* NGSPICE file created from sky130_fd_sc_ms__conb_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__conb_1 VGND VNB VPB VPWR HI LO
 R0 HI VPWR short w=510000u l=45000u
 R1 VGND LO short w=510000u l=45000u
 .ends
-
diff --git a/cells/decap/sky130_fd_sc_ms__decap_4.spice b/cells/decap/sky130_fd_sc_ms__decap_4.spice
index d3fb4a0..5a86d72 100644
--- a/cells/decap/sky130_fd_sc_ms__decap_4.spice
+++ b/cells/decap/sky130_fd_sc_ms__decap_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__decap_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__decap_4 VGND VNB VPB VPWR
 M1000 VPWR VGND VPWR VPB pshort w=1e+06u l=1e+06u
@@ -6,4 +21,3 @@
 M1001 VGND VPWR VGND VNB nlowvt w=420000u l=1e+06u
 +  ad=2.31e+11p pd=2.78e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/decap/sky130_fd_sc_ms__decap_8.spice b/cells/decap/sky130_fd_sc_ms__decap_8.spice
index 395c72f..a24f778 100644
--- a/cells/decap/sky130_fd_sc_ms__decap_8.spice
+++ b/cells/decap/sky130_fd_sc_ms__decap_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__decap_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__decap_8 VGND VNB VPB VPWR
 M1000 VPWR VGND VPWR VPB pshort w=1e+06u l=1e+06u
@@ -10,4 +25,3 @@
 M1003 VGND VPWR VGND VNB nlowvt w=420000u l=1e+06u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfbbn/sky130_fd_sc_ms__dfbbn_1.spice b/cells/dfbbn/sky130_fd_sc_ms__dfbbn_1.spice
index 7d25a48..09a8c8a 100644
--- a/cells/dfbbn/sky130_fd_sc_ms__dfbbn_1.spice
+++ b/cells/dfbbn/sky130_fd_sc_ms__dfbbn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dfbbn_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dfbbn_1 CLK_N D RESET_B SET_B VGND VNB VPB VPWR Q Q_N
 M1000 VGND a_1534_446# a_1611_140# VNB nlowvt w=420000u l=150000u
@@ -82,4 +97,3 @@
 M1039 VPWR a_1534_446# a_2412_410# VPB pshort w=840000u l=180000u
 +  ad=0p pd=0u as=2.268e+11p ps=2.22e+06u
 .ends
-
diff --git a/cells/dfbbn/sky130_fd_sc_ms__dfbbn_2.spice b/cells/dfbbn/sky130_fd_sc_ms__dfbbn_2.spice
index 07f0461..2a34d85 100644
--- a/cells/dfbbn/sky130_fd_sc_ms__dfbbn_2.spice
+++ b/cells/dfbbn/sky130_fd_sc_ms__dfbbn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dfbbn_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dfbbn_2 CLK_N D RESET_B SET_B VGND VNB VPB VPWR Q Q_N
 M1000 a_1555_410# a_1335_112# a_1934_392# VPB pshort w=1e+06u l=180000u
@@ -90,4 +105,3 @@
 M1043 Q_N a_1555_410# VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfbbp/sky130_fd_sc_ms__dfbbp_1.spice b/cells/dfbbp/sky130_fd_sc_ms__dfbbp_1.spice
index acef181..0079415 100644
--- a/cells/dfbbp/sky130_fd_sc_ms__dfbbp_1.spice
+++ b/cells/dfbbp/sky130_fd_sc_ms__dfbbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dfbbp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dfbbp_1 CLK D RESET_B SET_B VGND VNB VPB VPWR Q Q_N
 M1000 VPWR RESET_B a_1062_93# VPB pshort w=640000u l=180000u
@@ -82,4 +97,3 @@
 M1039 a_716_379# a_27_74# a_520_87# VPB pshort w=420000u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfrbp/sky130_fd_sc_ms__dfrbp_1.spice b/cells/dfrbp/sky130_fd_sc_ms__dfrbp_1.spice
index 9d10b78..a5a0e99 100644
--- a/cells/dfrbp/sky130_fd_sc_ms__dfrbp_1.spice
+++ b/cells/dfrbp/sky130_fd_sc_ms__dfrbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dfrbp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dfrbp_1 CLK D RESET_B VGND VNB VPB VPWR Q Q_N
 M1000 a_1434_74# a_307_387# a_1224_74# VNB nlowvt w=420000u l=150000u
@@ -70,4 +85,3 @@
 M1033 a_1468_471# a_501_387# a_1224_74# VPB pshort w=420000u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfrbp/sky130_fd_sc_ms__dfrbp_2.spice b/cells/dfrbp/sky130_fd_sc_ms__dfrbp_2.spice
index 1d4ad85..13e2f1d 100644
--- a/cells/dfrbp/sky130_fd_sc_ms__dfrbp_2.spice
+++ b/cells/dfrbp/sky130_fd_sc_ms__dfrbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dfrbp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dfrbp_2 CLK D RESET_B VGND VNB VPB VPWR Q Q_N
 M1000 Q a_2366_352# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -78,4 +93,3 @@
 M1037 VGND RESET_B a_156_74# VNB nlowvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfrtn/sky130_fd_sc_ms__dfrtn_1.spice b/cells/dfrtn/sky130_fd_sc_ms__dfrtn_1.spice
index 6f559b3..d114300 100644
--- a/cells/dfrtn/sky130_fd_sc_ms__dfrtn_1.spice
+++ b/cells/dfrtn/sky130_fd_sc_ms__dfrtn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dfrtn_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dfrtn_1 CLK_N D RESET_B VGND VNB VPB VPWR Q
 M1000 a_856_294# a_714_119# VPWR VPB pshort w=1e+06u l=180000u
@@ -66,4 +81,3 @@
 M1031 VPWR RESET_B a_33_74# VPB pshort w=420000u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfrtp/sky130_fd_sc_ms__dfrtp_1.spice b/cells/dfrtp/sky130_fd_sc_ms__dfrtp_1.spice
index ec71703..38a47c3 100644
--- a/cells/dfrtp/sky130_fd_sc_ms__dfrtp_1.spice
+++ b/cells/dfrtp/sky130_fd_sc_ms__dfrtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dfrtp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dfrtp_1 CLK D RESET_B VGND VNB VPB VPWR Q
 M1000 a_1656_81# RESET_B VGND VNB nlowvt w=420000u l=150000u
@@ -66,4 +81,3 @@
 M1031 a_833_400# a_701_463# VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfrtp/sky130_fd_sc_ms__dfrtp_2.spice b/cells/dfrtp/sky130_fd_sc_ms__dfrtp_2.spice
index 1b6bb81..c6baefe 100644
--- a/cells/dfrtp/sky130_fd_sc_ms__dfrtp_2.spice
+++ b/cells/dfrtp/sky130_fd_sc_ms__dfrtp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dfrtp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dfrtp_2 CLK D RESET_B VGND VNB VPB VPWR Q
 M1000 a_837_359# a_699_463# VPWR VPB pshort w=1e+06u l=180000u
@@ -70,4 +85,3 @@
 M1033 VGND a_1924_409# Q VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfrtp/sky130_fd_sc_ms__dfrtp_4.spice b/cells/dfrtp/sky130_fd_sc_ms__dfrtp_4.spice
index d8ac59d..22fe6ee 100644
--- a/cells/dfrtp/sky130_fd_sc_ms__dfrtp_4.spice
+++ b/cells/dfrtp/sky130_fd_sc_ms__dfrtp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dfrtp_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dfrtp_4 CLK D RESET_B VGND VNB VPB VPWR Q
 M1000 a_702_463# a_303_395# a_37_78# VNB nlowvt w=420000u l=150000u
@@ -80,4 +95,3 @@
 M1038 Q a_2013_409# VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfsbp/sky130_fd_sc_ms__dfsbp_1.spice b/cells/dfsbp/sky130_fd_sc_ms__dfsbp_1.spice
index 26c2b82..a0a7d8a 100644
--- a/cells/dfsbp/sky130_fd_sc_ms__dfsbp_1.spice
+++ b/cells/dfsbp/sky130_fd_sc_ms__dfsbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dfsbp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dfsbp_1 CLK D SET_B VGND VNB VPB VPWR Q Q_N
 M1000 a_1262_74# a_596_81# VGND VNB nlowvt w=640000u l=150000u
@@ -70,4 +85,3 @@
 M1033 VPWR a_1358_377# a_2113_74# VPB pshort w=840000u l=180000u
 +  ad=0p pd=0u as=2.352e+11p ps=2.24e+06u
 .ends
-
diff --git a/cells/dfsbp/sky130_fd_sc_ms__dfsbp_2.spice b/cells/dfsbp/sky130_fd_sc_ms__dfsbp_2.spice
index 81122f2..c5f9992 100644
--- a/cells/dfsbp/sky130_fd_sc_ms__dfsbp_2.spice
+++ b/cells/dfsbp/sky130_fd_sc_ms__dfsbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dfsbp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dfsbp_2 CLK D SET_B VGND VNB VPB VPWR Q Q_N
 M1000 VPWR SET_B a_757_401# VPB pshort w=420000u l=180000u
@@ -78,4 +93,3 @@
 M1037 a_1453_118# a_225_74# a_1339_74# VNB nlowvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfstp/sky130_fd_sc_ms__dfstp_1.spice b/cells/dfstp/sky130_fd_sc_ms__dfstp_1.spice
index 65abc74..8617513 100644
--- a/cells/dfstp/sky130_fd_sc_ms__dfstp_1.spice
+++ b/cells/dfstp/sky130_fd_sc_ms__dfstp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dfstp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dfstp_1 CLK D SET_B VGND VNB VPB VPWR Q
 M1000 a_760_395# a_604_74# VPWR VPB pshort w=420000u l=180000u
@@ -66,4 +81,3 @@
 M1031 VGND CLK a_224_350# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=2.109e+11p ps=2.05e+06u
 .ends
-
diff --git a/cells/dfstp/sky130_fd_sc_ms__dfstp_2.spice b/cells/dfstp/sky130_fd_sc_ms__dfstp_2.spice
index 2539779..c4f111c 100644
--- a/cells/dfstp/sky130_fd_sc_ms__dfstp_2.spice
+++ b/cells/dfstp/sky130_fd_sc_ms__dfstp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dfstp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dfstp_2 CLK D SET_B VGND VNB VPB VPWR Q
 M1000 a_1278_74# a_612_74# VGND VNB nlowvt w=640000u l=150000u
@@ -70,4 +85,3 @@
 M1033 VGND CLK a_225_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=2.109e+11p ps=2.05e+06u
 .ends
-
diff --git a/cells/dfstp/sky130_fd_sc_ms__dfstp_4.spice b/cells/dfstp/sky130_fd_sc_ms__dfstp_4.spice
index fbd247e..8853bc1 100644
--- a/cells/dfstp/sky130_fd_sc_ms__dfstp_4.spice
+++ b/cells/dfstp/sky130_fd_sc_ms__dfstp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dfstp_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dfstp_4 CLK D SET_B VGND VNB VPB VPWR Q
 M1000 VGND a_1324_392# a_1940_74# VNB nlowvt w=740000u l=150000u
@@ -80,4 +95,3 @@
 M1038 a_767_402# a_612_74# VPWR VPB pshort w=420000u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfxbp/sky130_fd_sc_ms__dfxbp_1.spice b/cells/dfxbp/sky130_fd_sc_ms__dfxbp_1.spice
index 4029aa3..977f6b9 100644
--- a/cells/dfxbp/sky130_fd_sc_ms__dfxbp_1.spice
+++ b/cells/dfxbp/sky130_fd_sc_ms__dfxbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dfxbp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dfxbp_1 CLK D VGND VNB VPB VPWR Q Q_N
 M1000 Q_N a_1644_112# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -58,4 +73,3 @@
 M1027 Q_N a_1644_112# VGND VNB nlowvt w=740000u l=150000u
 +  ad=2.109e+11p pd=2.05e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dfxbp/sky130_fd_sc_ms__dfxbp_2.spice b/cells/dfxbp/sky130_fd_sc_ms__dfxbp_2.spice
index 42a78b4..d47f4b9 100644
--- a/cells/dfxbp/sky130_fd_sc_ms__dfxbp_2.spice
+++ b/cells/dfxbp/sky130_fd_sc_ms__dfxbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dfxbp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dfxbp_2 CLK D VGND VNB VPB VPWR Q Q_N
 M1000 a_1248_128# a_27_74# a_1003_424# VNB nlowvt w=420000u l=150000u
@@ -68,4 +83,3 @@
 M1032 a_561_445# a_27_74# a_454_503# VNB nlowvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfxtp/sky130_fd_sc_ms__dfxtp_1.spice b/cells/dfxtp/sky130_fd_sc_ms__dfxtp_1.spice
index f1745ea..1676a68 100644
--- a/cells/dfxtp/sky130_fd_sc_ms__dfxtp_1.spice
+++ b/cells/dfxtp/sky130_fd_sc_ms__dfxtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dfxtp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dfxtp_1 CLK D VGND VNB VPB VPWR Q
 M1000 VPWR a_1014_424# a_1210_314# VPB pshort w=840000u l=180000u
@@ -50,4 +65,3 @@
 M1023 VPWR a_1210_314# a_1121_508# VPB pshort w=420000u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfxtp/sky130_fd_sc_ms__dfxtp_2.spice b/cells/dfxtp/sky130_fd_sc_ms__dfxtp_2.spice
index d4ffef4..ba86f93 100644
--- a/cells/dfxtp/sky130_fd_sc_ms__dfxtp_2.spice
+++ b/cells/dfxtp/sky130_fd_sc_ms__dfxtp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dfxtp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dfxtp_2 CLK D VGND VNB VPB VPWR Q
 M1000 VGND a_695_459# a_708_101# VNB nlowvt w=420000u l=150000u
@@ -54,4 +69,3 @@
 M1025 a_209_368# a_27_74# VGND VNB nlowvt w=740000u l=150000u
 +  ad=2.775e+11p pd=2.23e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dfxtp/sky130_fd_sc_ms__dfxtp_4.spice b/cells/dfxtp/sky130_fd_sc_ms__dfxtp_4.spice
index f3c4483..2571a78 100644
--- a/cells/dfxtp/sky130_fd_sc_ms__dfxtp_4.spice
+++ b/cells/dfxtp/sky130_fd_sc_ms__dfxtp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dfxtp_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dfxtp_4 CLK D VGND VNB VPB VPWR Q
 M1000 VPWR a_1226_296# a_1144_508# VPB pshort w=420000u l=180000u
@@ -64,4 +79,3 @@
 M1030 a_1178_124# a_27_74# a_1037_424# VNB nlowvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/diode/sky130_fd_sc_ms__diode_2.spice b/cells/diode/sky130_fd_sc_ms__diode_2.spice
index 67bda6d..e6de7a2 100644
--- a/cells/diode/sky130_fd_sc_ms__diode_2.spice
+++ b/cells/diode/sky130_fd_sc_ms__diode_2.spice
@@ -1,6 +1,20 @@
-* NGSPICE file created from sky130_fd_sc_ms__diode_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__diode_2 DIODE VGND VNB VPB VPWR
 D0 VNB DIODE ndiode p=7.32e+06u a=6.417e+11p
 .ends
-
diff --git a/cells/dlclkp/sky130_fd_sc_ms__dlclkp_1.spice b/cells/dlclkp/sky130_fd_sc_ms__dlclkp_1.spice
index f956e75..8ec9ecf 100644
--- a/cells/dlclkp/sky130_fd_sc_ms__dlclkp_1.spice
+++ b/cells/dlclkp/sky130_fd_sc_ms__dlclkp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dlclkp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dlclkp_1 CLK GATE VGND VNB VPB VPWR GCLK
 M1000 a_261_392# GATE VPWR VPB pshort w=1e+06u l=180000u
@@ -42,4 +57,3 @@
 M1019 a_83_260# a_315_54# a_267_80# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlclkp/sky130_fd_sc_ms__dlclkp_2.spice b/cells/dlclkp/sky130_fd_sc_ms__dlclkp_2.spice
index bb545c8..77deae6 100644
--- a/cells/dlclkp/sky130_fd_sc_ms__dlclkp_2.spice
+++ b/cells/dlclkp/sky130_fd_sc_ms__dlclkp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dlclkp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dlclkp_2 CLK GATE VGND VNB VPB VPWR GCLK
 M1000 a_83_244# a_315_338# a_267_392# VPB pshort w=1e+06u l=180000u
@@ -46,4 +61,3 @@
 M1021 VGND a_83_244# a_27_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=2.109e+11p ps=2.05e+06u
 .ends
-
diff --git a/cells/dlclkp/sky130_fd_sc_ms__dlclkp_4.spice b/cells/dlclkp/sky130_fd_sc_ms__dlclkp_4.spice
index 6a8524e..44b5602 100644
--- a/cells/dlclkp/sky130_fd_sc_ms__dlclkp_4.spice
+++ b/cells/dlclkp/sky130_fd_sc_ms__dlclkp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dlclkp_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dlclkp_4 CLK GATE VGND VNB VPB VPWR GCLK
 M1000 a_84_48# a_334_338# a_286_392# VPB pshort w=1e+06u l=180000u
@@ -54,4 +69,3 @@
 M1025 a_334_338# a_334_54# VGND VNB nlowvt w=740000u l=150000u
 +  ad=2.675e+11p pd=2.66e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrbn/sky130_fd_sc_ms__dlrbn_1.spice b/cells/dlrbn/sky130_fd_sc_ms__dlrbn_1.spice
index 9085bbc..49fbfd4 100644
--- a/cells/dlrbn/sky130_fd_sc_ms__dlrbn_1.spice
+++ b/cells/dlrbn/sky130_fd_sc_ms__dlrbn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dlrbn_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dlrbn_1 D GATE_N RESET_B VGND VNB VPB VPWR Q Q_N
 M1000 VPWR RESET_B a_889_92# VPB pshort w=1.12e+06u l=180000u
@@ -50,4 +65,3 @@
 M1023 VGND a_889_92# a_841_118# VNB nlowvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrbn/sky130_fd_sc_ms__dlrbn_2.spice b/cells/dlrbn/sky130_fd_sc_ms__dlrbn_2.spice
index 21cab61..dcaa0c8 100644
--- a/cells/dlrbn/sky130_fd_sc_ms__dlrbn_2.spice
+++ b/cells/dlrbn/sky130_fd_sc_ms__dlrbn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dlrbn_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dlrbn_2 D GATE_N RESET_B VGND VNB VPB VPWR Q Q_N
 M1000 VPWR a_838_48# Q VPB pshort w=1.12e+06u l=180000u
@@ -58,4 +73,3 @@
 M1027 Q_N a_1448_74# VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrbp/sky130_fd_sc_ms__dlrbp_1.spice b/cells/dlrbp/sky130_fd_sc_ms__dlrbp_1.spice
index 733523b..9e0b785 100644
--- a/cells/dlrbp/sky130_fd_sc_ms__dlrbp_1.spice
+++ b/cells/dlrbp/sky130_fd_sc_ms__dlrbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dlrbp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dlrbp_1 D GATE RESET_B VGND VNB VPB VPWR Q Q_N
 M1000 Q a_823_98# VGND VNB nlowvt w=740000u l=150000u
@@ -50,4 +65,3 @@
 M1023 VPWR D a_27_142# VPB pshort w=840000u l=180000u
 +  ad=0p pd=0u as=2.352e+11p ps=2.24e+06u
 .ends
-
diff --git a/cells/dlrbp/sky130_fd_sc_ms__dlrbp_2.spice b/cells/dlrbp/sky130_fd_sc_ms__dlrbp_2.spice
index b026b7d..c4f7864 100644
--- a/cells/dlrbp/sky130_fd_sc_ms__dlrbp_2.spice
+++ b/cells/dlrbp/sky130_fd_sc_ms__dlrbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dlrbp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dlrbp_2 D GATE RESET_B VGND VNB VPB VPWR Q Q_N
 M1000 VPWR D a_27_112# VPB pshort w=840000u l=180000u
@@ -58,4 +73,3 @@
 M1027 a_821_98# a_641_80# VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrtn/sky130_fd_sc_ms__dlrtn_1.spice b/cells/dlrtn/sky130_fd_sc_ms__dlrtn_1.spice
index e184226..3e6b4cd 100644
--- a/cells/dlrtn/sky130_fd_sc_ms__dlrtn_1.spice
+++ b/cells/dlrtn/sky130_fd_sc_ms__dlrtn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dlrtn_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dlrtn_1 D GATE_N RESET_B VGND VNB VPB VPWR Q
 M1000 a_232_98# GATE_N VGND VNB nlowvt w=740000u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_897_406# a_657_392# VPWR VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrtn/sky130_fd_sc_ms__dlrtn_2.spice b/cells/dlrtn/sky130_fd_sc_ms__dlrtn_2.spice
index 61a2cec..84f0b61 100644
--- a/cells/dlrtn/sky130_fd_sc_ms__dlrtn_2.spice
+++ b/cells/dlrtn/sky130_fd_sc_ms__dlrtn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dlrtn_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dlrtn_2 D GATE_N RESET_B VGND VNB VPB VPWR Q
 M1000 VGND RESET_B a_1153_74# VNB nlowvt w=740000u l=150000u
@@ -46,4 +61,3 @@
 M1021 VPWR a_232_98# a_373_82# VPB pshort w=840000u l=180000u
 +  ad=0p pd=0u as=2.352e+11p ps=2.24e+06u
 .ends
-
diff --git a/cells/dlrtn/sky130_fd_sc_ms__dlrtn_4.spice b/cells/dlrtn/sky130_fd_sc_ms__dlrtn_4.spice
index ede378b..504d233 100644
--- a/cells/dlrtn/sky130_fd_sc_ms__dlrtn_4.spice
+++ b/cells/dlrtn/sky130_fd_sc_ms__dlrtn_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dlrtn_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dlrtn_4 D GATE_N RESET_B VGND VNB VPB VPWR Q
 M1000 a_750_504# a_232_98# a_642_392# VPB pshort w=420000u l=180000u
@@ -62,4 +77,3 @@
 M1029 VPWR RESET_B a_888_406# VPB pshort w=840000u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrtp/sky130_fd_sc_ms__dlrtp_1.spice b/cells/dlrtp/sky130_fd_sc_ms__dlrtp_1.spice
index ab0ff05..3e78198 100644
--- a/cells/dlrtp/sky130_fd_sc_ms__dlrtp_1.spice
+++ b/cells/dlrtp/sky130_fd_sc_ms__dlrtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dlrtp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dlrtp_1 D GATE RESET_B VGND VNB VPB VPWR Q
 M1000 a_643_74# a_219_424# a_571_392# VPB pshort w=1e+06u l=180000u
@@ -42,4 +57,3 @@
 M1019 a_643_74# a_363_74# a_565_74# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrtp/sky130_fd_sc_ms__dlrtp_2.spice b/cells/dlrtp/sky130_fd_sc_ms__dlrtp_2.spice
index a703016..af4d495 100644
--- a/cells/dlrtp/sky130_fd_sc_ms__dlrtp_2.spice
+++ b/cells/dlrtp/sky130_fd_sc_ms__dlrtp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dlrtp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dlrtp_2 D GATE RESET_B VGND VNB VPB VPWR Q
 M1000 a_759_508# a_347_98# a_646_74# VPB pshort w=420000u l=180000u
@@ -46,4 +61,3 @@
 M1021 a_235_74# GATE VGND VNB nlowvt w=740000u l=150000u
 +  ad=2.109e+11p pd=2.05e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrtp/sky130_fd_sc_ms__dlrtp_4.spice b/cells/dlrtp/sky130_fd_sc_ms__dlrtp_4.spice
index 37566ff..28fabf3 100644
--- a/cells/dlrtp/sky130_fd_sc_ms__dlrtp_4.spice
+++ b/cells/dlrtp/sky130_fd_sc_ms__dlrtp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dlrtp_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dlrtp_4 D GATE RESET_B VGND VNB VPB VPWR Q
 M1000 VPWR D a_27_126# VPB pshort w=840000u l=180000u
@@ -62,4 +77,3 @@
 M1029 VGND a_797_48# Q VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlxbn/sky130_fd_sc_ms__dlxbn_1.spice b/cells/dlxbn/sky130_fd_sc_ms__dlxbn_1.spice
index 465b79e..a1006e9 100644
--- a/cells/dlxbn/sky130_fd_sc_ms__dlxbn_1.spice
+++ b/cells/dlxbn/sky130_fd_sc_ms__dlxbn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dlxbn_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dlxbn_1 D GATE_N VGND VNB VPB VPWR Q Q_N
 M1000 VPWR D a_27_120# VPB pshort w=840000u l=180000u
@@ -46,4 +61,3 @@
 M1021 VPWR a_232_82# a_343_80# VPB pshort w=840000u l=180000u
 +  ad=0p pd=0u as=2.352e+11p ps=2.24e+06u
 .ends
-
diff --git a/cells/dlxbn/sky130_fd_sc_ms__dlxbn_2.spice b/cells/dlxbn/sky130_fd_sc_ms__dlxbn_2.spice
index 6d4a589..f84b78d 100644
--- a/cells/dlxbn/sky130_fd_sc_ms__dlxbn_2.spice
+++ b/cells/dlxbn/sky130_fd_sc_ms__dlxbn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dlxbn_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dlxbn_2 D GATE_N VGND VNB VPB VPWR Q Q_N
 M1000 VPWR a_887_270# Q VPB pshort w=1.12e+06u l=180000u
@@ -54,4 +69,3 @@
 M1025 a_839_123# a_343_74# a_647_79# VNB nlowvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlxbp/sky130_fd_sc_ms__dlxbp_1.spice b/cells/dlxbp/sky130_fd_sc_ms__dlxbp_1.spice
index 9eab420..64c1209 100644
--- a/cells/dlxbp/sky130_fd_sc_ms__dlxbp_1.spice
+++ b/cells/dlxbp/sky130_fd_sc_ms__dlxbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dlxbp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dlxbp_1 D GATE VGND VNB VPB VPWR Q Q_N
 M1000 VPWR a_231_74# a_373_82# VPB pshort w=840000u l=180000u
@@ -46,4 +61,3 @@
 M1021 a_773_508# a_373_82# a_667_80# VPB pshort w=420000u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlxtn/sky130_fd_sc_ms__dlxtn_1.spice b/cells/dlxtn/sky130_fd_sc_ms__dlxtn_1.spice
index 9f3e2de..1948d60 100644
--- a/cells/dlxtn/sky130_fd_sc_ms__dlxtn_1.spice
+++ b/cells/dlxtn/sky130_fd_sc_ms__dlxtn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dlxtn_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dlxtn_1 D GATE_N VGND VNB VPB VPWR Q
 M1000 a_815_508# a_220_419# a_672_392# VPB pshort w=420000u l=180000u
@@ -38,4 +53,3 @@
 M1017 a_672_392# a_220_419# a_655_79# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlxtn/sky130_fd_sc_ms__dlxtn_2.spice b/cells/dlxtn/sky130_fd_sc_ms__dlxtn_2.spice
index 4dfe7d8..4e13afe 100644
--- a/cells/dlxtn/sky130_fd_sc_ms__dlxtn_2.spice
+++ b/cells/dlxtn/sky130_fd_sc_ms__dlxtn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dlxtn_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dlxtn_2 D GATE_N VGND VNB VPB VPWR Q
 M1000 Q a_842_405# VGND VNB nlowvt w=740000u l=150000u
@@ -42,4 +57,3 @@
 M1019 Q a_842_405# VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlxtn/sky130_fd_sc_ms__dlxtn_4.spice b/cells/dlxtn/sky130_fd_sc_ms__dlxtn_4.spice
index 65bfc35..a001cd2 100644
--- a/cells/dlxtn/sky130_fd_sc_ms__dlxtn_4.spice
+++ b/cells/dlxtn/sky130_fd_sc_ms__dlxtn_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dlxtn_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dlxtn_4 D GATE_N VGND VNB VPB VPWR Q
 M1000 a_792_508# a_232_114# a_678_392# VPB pshort w=420000u l=180000u
@@ -54,4 +69,3 @@
 M1025 VGND a_840_395# Q VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlxtp/sky130_fd_sc_ms__dlxtp_1.spice b/cells/dlxtp/sky130_fd_sc_ms__dlxtp_1.spice
index 1759300..795ae63 100644
--- a/cells/dlxtp/sky130_fd_sc_ms__dlxtp_1.spice
+++ b/cells/dlxtp/sky130_fd_sc_ms__dlxtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dlxtp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dlxtp_1 D GATE VGND VNB VPB VPWR Q
 M1000 Q a_386_326# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -38,4 +53,3 @@
 M1017 a_422_392# a_685_59# a_592_149# VPB pshort w=420000u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlygate4sd1/sky130_fd_sc_ms__dlygate4sd1_1.spice b/cells/dlygate4sd1/sky130_fd_sc_ms__dlygate4sd1_1.spice
index 5d2fc29..b277867 100644
--- a/cells/dlygate4sd1/sky130_fd_sc_ms__dlygate4sd1_1.spice
+++ b/cells/dlygate4sd1/sky130_fd_sc_ms__dlygate4sd1_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dlygate4sd1_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dlygate4sd1_1 A VGND VNB VPB VPWR X
 M1000 VPWR a_288_74# a_405_138# VPB pshort w=1e+06u l=180000u
@@ -18,4 +33,3 @@
 M1007 a_288_74# a_28_74# VGND VNB nlowvt w=420000u l=150000u
 +  ad=1.113e+11p pd=1.37e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dlygate4sd2/sky130_fd_sc_ms__dlygate4sd2_1.spice b/cells/dlygate4sd2/sky130_fd_sc_ms__dlygate4sd2_1.spice
index ad129a4..4726dc4 100644
--- a/cells/dlygate4sd2/sky130_fd_sc_ms__dlygate4sd2_1.spice
+++ b/cells/dlygate4sd2/sky130_fd_sc_ms__dlygate4sd2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dlygate4sd2_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dlygate4sd2_1 A VGND VNB VPB VPWR X
 M1000 X a_405_138# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -18,4 +33,3 @@
 M1007 a_288_74# a_28_74# VPWR VPB pshort w=1e+06u l=250000u
 +  ad=2.6e+11p pd=2.52e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dlygate4sd3/sky130_fd_sc_ms__dlygate4sd3_1.spice b/cells/dlygate4sd3/sky130_fd_sc_ms__dlygate4sd3_1.spice
index c53b484..997ba43 100644
--- a/cells/dlygate4sd3/sky130_fd_sc_ms__dlygate4sd3_1.spice
+++ b/cells/dlygate4sd3/sky130_fd_sc_ms__dlygate4sd3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dlygate4sd3_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dlygate4sd3_1 A VGND VNB VPB VPWR X
 M1000 X a_405_138# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -18,4 +33,3 @@
 M1007 X a_405_138# VGND VNB nlowvt w=740000u l=150000u
 +  ad=1.961e+11p pd=2.01e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dlymetal6s2s/sky130_fd_sc_ms__dlymetal6s2s_1.spice b/cells/dlymetal6s2s/sky130_fd_sc_ms__dlymetal6s2s_1.spice
index d32ae34..5d407d1 100644
--- a/cells/dlymetal6s2s/sky130_fd_sc_ms__dlymetal6s2s_1.spice
+++ b/cells/dlymetal6s2s/sky130_fd_sc_ms__dlymetal6s2s_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dlymetal6s2s_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dlymetal6s2s_1 A VGND VNB VPB VPWR X
 M1000 VPWR A a_28_138# VPB pshort w=420000u l=180000u
@@ -26,4 +41,3 @@
 M1011 a_785_74# a_604_138# VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=2.912e+11p pd=2.76e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dlymetal6s4s/sky130_fd_sc_ms__dlymetal6s4s_1.spice b/cells/dlymetal6s4s/sky130_fd_sc_ms__dlymetal6s4s_1.spice
index 70187b8..527e93c 100644
--- a/cells/dlymetal6s4s/sky130_fd_sc_ms__dlymetal6s4s_1.spice
+++ b/cells/dlymetal6s4s/sky130_fd_sc_ms__dlymetal6s4s_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dlymetal6s4s_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dlymetal6s4s_1 A VGND VNB VPB VPWR X
 M1000 VPWR A a_28_138# VPB pshort w=420000u l=180000u
@@ -26,4 +41,3 @@
 M1011 a_785_74# a_604_138# VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=2.912e+11p pd=2.76e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dlymetal6s6s/sky130_fd_sc_ms__dlymetal6s6s_1.spice b/cells/dlymetal6s6s/sky130_fd_sc_ms__dlymetal6s6s_1.spice
index 8cc4f2b..72b8544 100644
--- a/cells/dlymetal6s6s/sky130_fd_sc_ms__dlymetal6s6s_1.spice
+++ b/cells/dlymetal6s6s/sky130_fd_sc_ms__dlymetal6s6s_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__dlymetal6s6s_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__dlymetal6s6s_1 A VGND VNB VPB VPWR X
 M1000 VPWR A a_28_138# VPB pshort w=420000u l=180000u
@@ -26,4 +41,3 @@
 M1011 X a_604_138# VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=2.912e+11p pd=2.76e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/ebufn/sky130_fd_sc_ms__ebufn_1.spice b/cells/ebufn/sky130_fd_sc_ms__ebufn_1.spice
index 3de98ed..a921307 100644
--- a/cells/ebufn/sky130_fd_sc_ms__ebufn_1.spice
+++ b/cells/ebufn/sky130_fd_sc_ms__ebufn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__ebufn_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__ebufn_1 A TE_B VGND VNB VPB VPWR Z
 M1000 VPWR TE_B a_27_404# VPB pshort w=840000u l=180000u
@@ -18,4 +33,3 @@
 M1007 VGND TE_B a_27_404# VNB nlowvt w=550000u l=150000u
 +  ad=0p pd=0u as=1.5675e+11p ps=1.67e+06u
 .ends
-
diff --git a/cells/ebufn/sky130_fd_sc_ms__ebufn_2.spice b/cells/ebufn/sky130_fd_sc_ms__ebufn_2.spice
index 7e3d2c0..6925159 100644
--- a/cells/ebufn/sky130_fd_sc_ms__ebufn_2.spice
+++ b/cells/ebufn/sky130_fd_sc_ms__ebufn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__ebufn_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__ebufn_2 A TE_B VGND VNB VPB VPWR Z
 M1000 a_84_48# A VGND VNB nlowvt w=640000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VGND TE_B a_283_48# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=1.824e+11p ps=1.85e+06u
 .ends
-
diff --git a/cells/ebufn/sky130_fd_sc_ms__ebufn_4.spice b/cells/ebufn/sky130_fd_sc_ms__ebufn_4.spice
index 2fb486f..064ba6f 100644
--- a/cells/ebufn/sky130_fd_sc_ms__ebufn_4.spice
+++ b/cells/ebufn/sky130_fd_sc_ms__ebufn_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__ebufn_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__ebufn_4 A TE_B VGND VNB VPB VPWR Z
 M1000 Z a_27_368# a_348_368# VPB pshort w=1.12e+06u l=180000u
@@ -42,4 +57,3 @@
 M1019 a_348_368# TE_B VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/ebufn/sky130_fd_sc_ms__ebufn_8.spice b/cells/ebufn/sky130_fd_sc_ms__ebufn_8.spice
index c150077..37d7a54 100644
--- a/cells/ebufn/sky130_fd_sc_ms__ebufn_8.spice
+++ b/cells/ebufn/sky130_fd_sc_ms__ebufn_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__ebufn_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__ebufn_8 A TE_B VGND VNB VPB VPWR Z
 M1000 a_27_74# a_833_48# VGND VNB nlowvt w=740000u l=150000u
@@ -78,4 +93,3 @@
 M1037 a_27_74# a_833_48# VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/edfxbp/sky130_fd_sc_ms__edfxbp_1.spice b/cells/edfxbp/sky130_fd_sc_ms__edfxbp_1.spice
index fb7fe99..6c40929 100644
--- a/cells/edfxbp/sky130_fd_sc_ms__edfxbp_1.spice
+++ b/cells/edfxbp/sky130_fd_sc_ms__edfxbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__edfxbp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__edfxbp_1 CLK D DE VGND VNB VPB VPWR Q Q_N
 M1000 a_1198_97# a_1008_74# a_27_74# VPB pshort w=420000u l=180000u
@@ -74,4 +89,3 @@
 M1035 a_1879_74# a_818_74# a_2011_392# VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/edfxtp/sky130_fd_sc_ms__edfxtp_1.spice b/cells/edfxtp/sky130_fd_sc_ms__edfxtp_1.spice
index 8394ce0..56f1574 100644
--- a/cells/edfxtp/sky130_fd_sc_ms__edfxtp_1.spice
+++ b/cells/edfxtp/sky130_fd_sc_ms__edfxtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__edfxtp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__edfxtp_1 CLK D DE VGND VNB VPB VPWR Q
 M1000 VPWR a_533_61# a_2091_502# VPB pshort w=420000u l=180000u
@@ -70,4 +85,3 @@
 M1033 a_958_74# a_763_74# VGND VNB nlowvt w=740000u l=150000u
 +  ad=2.109e+11p pd=2.05e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/einvn/sky130_fd_sc_ms__einvn_1.spice b/cells/einvn/sky130_fd_sc_ms__einvn_1.spice
index fffed63..6b96a98 100644
--- a/cells/einvn/sky130_fd_sc_ms__einvn_1.spice
+++ b/cells/einvn/sky130_fd_sc_ms__einvn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__einvn_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__einvn_1 A TE_B VGND VNB VPB VPWR Z
 M1000 a_281_368# TE_B VPWR VPB pshort w=1.12e+06u l=180000u
@@ -14,4 +29,3 @@
 M1005 VGND TE_B a_22_46# VNB nlowvt w=420000u l=150000u
 +  ad=0p pd=0u as=1.218e+11p ps=1.42e+06u
 .ends
-
diff --git a/cells/einvn/sky130_fd_sc_ms__einvn_2.spice b/cells/einvn/sky130_fd_sc_ms__einvn_2.spice
index 8501c86..b6f9da4 100644
--- a/cells/einvn/sky130_fd_sc_ms__einvn_2.spice
+++ b/cells/einvn/sky130_fd_sc_ms__einvn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__einvn_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__einvn_2 A TE_B VGND VNB VPB VPWR Z
 M1000 VGND a_117_74# a_231_74# VNB nlowvt w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_117_74# TE_B VGND VNB nlowvt w=420000u l=150000u
 +  ad=1.197e+11p pd=1.41e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/einvn/sky130_fd_sc_ms__einvn_4.spice b/cells/einvn/sky130_fd_sc_ms__einvn_4.spice
index 08d279a..b36117f 100644
--- a/cells/einvn/sky130_fd_sc_ms__einvn_4.spice
+++ b/cells/einvn/sky130_fd_sc_ms__einvn_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__einvn_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__einvn_4 A TE_B VGND VNB VPB VPWR Z
 M1000 VPWR TE_B a_241_368# VPB pshort w=1.12e+06u l=180000u
@@ -38,4 +53,3 @@
 M1017 VGND a_114_74# a_281_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/einvn/sky130_fd_sc_ms__einvn_8.spice b/cells/einvn/sky130_fd_sc_ms__einvn_8.spice
index 0642889..5b5f39e 100644
--- a/cells/einvn/sky130_fd_sc_ms__einvn_8.spice
+++ b/cells/einvn/sky130_fd_sc_ms__einvn_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__einvn_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__einvn_8 A TE_B VGND VNB VPB VPWR Z
 M1000 a_239_368# A Z VPB pshort w=1.12e+06u l=180000u
@@ -70,4 +85,3 @@
 M1033 a_239_368# A Z VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/einvp/sky130_fd_sc_ms__einvp_1.spice b/cells/einvp/sky130_fd_sc_ms__einvp_1.spice
index 125d3be..08e39ff 100644
--- a/cells/einvp/sky130_fd_sc_ms__einvp_1.spice
+++ b/cells/einvp/sky130_fd_sc_ms__einvp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__einvp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__einvp_1 A TE VGND VNB VPB VPWR Z
 M1000 a_313_392# a_44_549# VPWR VPB pshort w=1e+06u l=180000u
@@ -14,4 +29,3 @@
 M1005 VPWR TE a_44_549# VPB pshort w=420000u l=180000u
 +  ad=0p pd=0u as=2.583e+11p ps=2.07e+06u
 .ends
-
diff --git a/cells/einvp/sky130_fd_sc_ms__einvp_2.spice b/cells/einvp/sky130_fd_sc_ms__einvp_2.spice
index b30322d..dc55bf7 100644
--- a/cells/einvp/sky130_fd_sc_ms__einvp_2.spice
+++ b/cells/einvp/sky130_fd_sc_ms__einvp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__einvp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__einvp_2 A TE VGND VNB VPB VPWR Z
 M1000 VGND TE a_263_323# VNB nlowvt w=420000u l=150000u
@@ -22,4 +37,3 @@
 M1009 Z A a_36_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/einvp/sky130_fd_sc_ms__einvp_4.spice b/cells/einvp/sky130_fd_sc_ms__einvp_4.spice
index 2b407a0..1aa0ae9 100644
--- a/cells/einvp/sky130_fd_sc_ms__einvp_4.spice
+++ b/cells/einvp/sky130_fd_sc_ms__einvp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__einvp_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__einvp_4 A TE VGND VNB VPB VPWR Z
 M1000 Z A a_27_368# VPB pshort w=1.12e+06u l=180000u
@@ -38,4 +53,3 @@
 M1017 VGND TE a_27_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/einvp/sky130_fd_sc_ms__einvp_8.spice b/cells/einvp/sky130_fd_sc_ms__einvp_8.spice
index a5a4420..55a8b1e 100644
--- a/cells/einvp/sky130_fd_sc_ms__einvp_8.spice
+++ b/cells/einvp/sky130_fd_sc_ms__einvp_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__einvp_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__einvp_8 A TE VGND VNB VPB VPWR Z
 M1000 VPWR a_802_323# a_27_368# VPB pshort w=1.12e+06u l=180000u
@@ -70,4 +85,3 @@
 M1033 VGND TE a_27_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fa/sky130_fd_sc_ms__fa_1.spice b/cells/fa/sky130_fd_sc_ms__fa_1.spice
index 982802c..1b2cd90 100644
--- a/cells/fa/sky130_fd_sc_ms__fa_1.spice
+++ b/cells/fa/sky130_fd_sc_ms__fa_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__fa_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__fa_1 A B CIN VGND VNB VPB VPWR COUT SUM
 M1000 a_315_75# B a_237_75# VNB nlowvt w=640000u l=150000u
@@ -58,4 +73,3 @@
 M1027 a_220_368# A VPWR VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fa/sky130_fd_sc_ms__fa_2.spice b/cells/fa/sky130_fd_sc_ms__fa_2.spice
index 3385dff..4c3b784 100644
--- a/cells/fa/sky130_fd_sc_ms__fa_2.spice
+++ b/cells/fa/sky130_fd_sc_ms__fa_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__fa_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__fa_2 A B CIN VGND VNB VPB VPWR COUT SUM
 M1000 VPWR B a_686_347# VPB pshort w=1e+06u l=180000u
@@ -66,4 +81,3 @@
 M1031 a_701_79# CIN VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fa/sky130_fd_sc_ms__fa_4.spice b/cells/fa/sky130_fd_sc_ms__fa_4.spice
index 913025a..cd25ae1 100644
--- a/cells/fa/sky130_fd_sc_ms__fa_4.spice
+++ b/cells/fa/sky130_fd_sc_ms__fa_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__fa_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__fa_4 A B CIN VGND VNB VPB VPWR COUT SUM
 M1000 VPWR a_418_74# COUT VPB pshort w=1.12e+06u l=180000u
@@ -82,4 +97,3 @@
 M1039 a_1238_74# B a_1160_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fah/sky130_fd_sc_ms__fah_1.spice b/cells/fah/sky130_fd_sc_ms__fah_1.spice
index f05c745..8b9dbca 100644
--- a/cells/fah/sky130_fd_sc_ms__fah_1.spice
+++ b/cells/fah/sky130_fd_sc_ms__fah_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__fah_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__fah_1 A B CI VGND VNB VPB VPWR COUT SUM
 M1000 a_231_132# CI VPWR VPB pshort w=1e+06u l=180000u
@@ -66,4 +81,3 @@
 M1031 a_2342_48# A VPWR VPB pshort w=1e+06u l=180000u
 +  ad=2.85e+11p pd=2.57e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/fah/sky130_fd_sc_ms__fah_2.spice b/cells/fah/sky130_fd_sc_ms__fah_2.spice
index e53d163..7ec4acb 100644
--- a/cells/fah/sky130_fd_sc_ms__fah_2.spice
+++ b/cells/fah/sky130_fd_sc_ms__fah_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__fah_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__fah_2 A B CI VGND VNB VPB VPWR COUT SUM
 M1000 a_416_392# A VGND VNB nlowvt w=640000u l=150000u
@@ -74,4 +89,3 @@
 M1035 VGND a_1454_424# COUT VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fah/sky130_fd_sc_ms__fah_4.spice b/cells/fah/sky130_fd_sc_ms__fah_4.spice
index da2814d..ca09c3f 100644
--- a/cells/fah/sky130_fd_sc_ms__fah_4.spice
+++ b/cells/fah/sky130_fd_sc_ms__fah_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__fah_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__fah_4 A B CI VGND VNB VPB VPWR COUT SUM
 M1000 a_1268_379# a_531_362# a_586_257# VPB pshort w=840000u l=180000u
@@ -90,4 +105,3 @@
 M1043 a_1278_102# a_531_362# a_1378_125# VPB pshort w=840000u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fahcin/sky130_fd_sc_ms__fahcin_1.spice b/cells/fahcin/sky130_fd_sc_ms__fahcin_1.spice
index 6d204ff..3b0f8f5 100644
--- a/cells/fahcin/sky130_fd_sc_ms__fahcin_1.spice
+++ b/cells/fahcin/sky130_fd_sc_ms__fahcin_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__fahcin_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__fahcin_1 A B CIN VGND VNB VPB VPWR COUT SUM
 M1000 VGND a_1857_368# a_1967_384# VNB nlowvt w=640000u l=150000u
@@ -66,4 +81,3 @@
 M1031 VPWR B a_492_48# VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=3.136e+11p ps=2.8e+06u
 .ends
-
diff --git a/cells/fahcon/sky130_fd_sc_ms__fahcon_1.spice b/cells/fahcon/sky130_fd_sc_ms__fahcon_1.spice
index 01eb2c1..34efb84 100644
--- a/cells/fahcon/sky130_fd_sc_ms__fahcon_1.spice
+++ b/cells/fahcon/sky130_fd_sc_ms__fahcon_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__fahcon_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__fahcon_1 A B CI VGND VNB VPB VPWR COUT_N SUM
 M1000 a_372_365# a_336_263# a_244_368# VPB pshort w=840000u l=180000u
@@ -66,4 +81,3 @@
 M1031 a_1026_389# B VGND VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fill/sky130_fd_sc_ms__fill_1.spice b/cells/fill/sky130_fd_sc_ms__fill_1.spice
index c4b4855..a63581f 100644
--- a/cells/fill/sky130_fd_sc_ms__fill_1.spice
+++ b/cells/fill/sky130_fd_sc_ms__fill_1.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__fill_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__fill_1 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/fill/sky130_fd_sc_ms__fill_2.spice b/cells/fill/sky130_fd_sc_ms__fill_2.spice
index 22d84f0..c0ae2a0 100644
--- a/cells/fill/sky130_fd_sc_ms__fill_2.spice
+++ b/cells/fill/sky130_fd_sc_ms__fill_2.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__fill_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__fill_2 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/fill/sky130_fd_sc_ms__fill_4.spice b/cells/fill/sky130_fd_sc_ms__fill_4.spice
index 425eb2a..c1f2c61 100644
--- a/cells/fill/sky130_fd_sc_ms__fill_4.spice
+++ b/cells/fill/sky130_fd_sc_ms__fill_4.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__fill_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__fill_4 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/fill/sky130_fd_sc_ms__fill_8.spice b/cells/fill/sky130_fd_sc_ms__fill_8.spice
index 7101cdf..455c144 100644
--- a/cells/fill/sky130_fd_sc_ms__fill_8.spice
+++ b/cells/fill/sky130_fd_sc_ms__fill_8.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__fill_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__fill_8 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/fill_diode/sky130_fd_sc_ms__fill_diode_2.spice b/cells/fill_diode/sky130_fd_sc_ms__fill_diode_2.spice
index cea3246..0f0df3a 100644
--- a/cells/fill_diode/sky130_fd_sc_ms__fill_diode_2.spice
+++ b/cells/fill_diode/sky130_fd_sc_ms__fill_diode_2.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__fill_diode_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__fill_diode_2 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/fill_diode/sky130_fd_sc_ms__fill_diode_4.spice b/cells/fill_diode/sky130_fd_sc_ms__fill_diode_4.spice
index d909de1..d916f14 100644
--- a/cells/fill_diode/sky130_fd_sc_ms__fill_diode_4.spice
+++ b/cells/fill_diode/sky130_fd_sc_ms__fill_diode_4.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__fill_diode_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__fill_diode_4 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/fill_diode/sky130_fd_sc_ms__fill_diode_8.spice b/cells/fill_diode/sky130_fd_sc_ms__fill_diode_8.spice
index 58b096b..ded97b3 100644
--- a/cells/fill_diode/sky130_fd_sc_ms__fill_diode_8.spice
+++ b/cells/fill_diode/sky130_fd_sc_ms__fill_diode_8.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__fill_diode_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__fill_diode_8 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/ha/sky130_fd_sc_ms__ha_1.spice b/cells/ha/sky130_fd_sc_ms__ha_1.spice
index 8af39b4..bf1c3e9 100644
--- a/cells/ha/sky130_fd_sc_ms__ha_1.spice
+++ b/cells/ha/sky130_fd_sc_ms__ha_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__ha_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__ha_1 A B VGND VNB VPB VPWR COUT SUM
 M1000 VPWR A a_239_294# VPB pshort w=840000u l=180000u
@@ -30,4 +45,3 @@
 M1013 a_305_130# A VGND VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/ha/sky130_fd_sc_ms__ha_2.spice b/cells/ha/sky130_fd_sc_ms__ha_2.spice
index 2948bce..0e4d282 100644
--- a/cells/ha/sky130_fd_sc_ms__ha_2.spice
+++ b/cells/ha/sky130_fd_sc_ms__ha_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__ha_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__ha_2 A B VGND VNB VPB VPWR COUT SUM
 M1000 COUT a_27_74# VGND VNB nlowvt w=740000u l=150000u
@@ -38,4 +53,3 @@
 M1017 a_278_74# a_27_74# a_394_388# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=2.01625e+11p ps=2.05e+06u
 .ends
-
diff --git a/cells/ha/sky130_fd_sc_ms__ha_4.spice b/cells/ha/sky130_fd_sc_ms__ha_4.spice
index d88e717..92bf6ad 100644
--- a/cells/ha/sky130_fd_sc_ms__ha_4.spice
+++ b/cells/ha/sky130_fd_sc_ms__ha_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__ha_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__ha_4 A B VGND VNB VPB VPWR COUT SUM
 M1000 a_435_99# B a_707_119# VNB nlowvt w=640000u l=150000u
@@ -74,4 +89,3 @@
 M1035 VPWR a_297_392# SUM VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/inv/sky130_fd_sc_ms__inv_1.spice b/cells/inv/sky130_fd_sc_ms__inv_1.spice
index 9fd1d33..28bb0dc 100644
--- a/cells/inv/sky130_fd_sc_ms__inv_1.spice
+++ b/cells/inv/sky130_fd_sc_ms__inv_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__inv_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__inv_1 A VGND VNB VPB VPWR Y
 M1000 Y A VGND VNB nlowvt w=740000u l=150000u
@@ -6,4 +21,3 @@
 M1001 Y A VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=3.136e+11p pd=2.8e+06u as=3.696e+11p ps=2.9e+06u
 .ends
-
diff --git a/cells/inv/sky130_fd_sc_ms__inv_16.spice b/cells/inv/sky130_fd_sc_ms__inv_16.spice
index 5240733..eea8ecd 100644
--- a/cells/inv/sky130_fd_sc_ms__inv_16.spice
+++ b/cells/inv/sky130_fd_sc_ms__inv_16.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__inv_16.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__inv_16 A VGND VNB VPB VPWR Y
 M1000 Y A VGND VNB nlowvt w=740000u l=150000u
@@ -66,4 +81,3 @@
 M1031 Y A VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/inv/sky130_fd_sc_ms__inv_2.spice b/cells/inv/sky130_fd_sc_ms__inv_2.spice
index a9be647..58fd948 100644
--- a/cells/inv/sky130_fd_sc_ms__inv_2.spice
+++ b/cells/inv/sky130_fd_sc_ms__inv_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__inv_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__inv_2 A VGND VNB VPB VPWR Y
 M1000 Y A VPWR VPB pshort w=1.12e+06u l=180000u
@@ -10,4 +25,3 @@
 M1003 VGND A Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/inv/sky130_fd_sc_ms__inv_4.spice b/cells/inv/sky130_fd_sc_ms__inv_4.spice
index 5faf090..fdae630 100644
--- a/cells/inv/sky130_fd_sc_ms__inv_4.spice
+++ b/cells/inv/sky130_fd_sc_ms__inv_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__inv_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__inv_4 A VGND VNB VPB VPWR Y
 M1000 Y A VPWR VPB pshort w=1.12e+06u l=180000u
@@ -18,4 +33,3 @@
 M1007 VPWR A Y VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/inv/sky130_fd_sc_ms__inv_8.spice b/cells/inv/sky130_fd_sc_ms__inv_8.spice
index 8db0d11..979f747 100644
--- a/cells/inv/sky130_fd_sc_ms__inv_8.spice
+++ b/cells/inv/sky130_fd_sc_ms__inv_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__inv_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__inv_8 A VGND VNB VPB VPWR Y
 M1000 VGND A Y VNB nlowvt w=740000u l=150000u
@@ -34,4 +49,3 @@
 M1015 VGND A Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/maj3/sky130_fd_sc_ms__maj3_1.spice b/cells/maj3/sky130_fd_sc_ms__maj3_1.spice
index 50eb218..c1bf20d 100644
--- a/cells/maj3/sky130_fd_sc_ms__maj3_1.spice
+++ b/cells/maj3/sky130_fd_sc_ms__maj3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__maj3_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__maj3_1 A B C VGND VNB VPB VPWR X
 M1000 a_601_384# A VPWR VPB pshort w=1e+06u l=180000u
@@ -30,4 +45,3 @@
 M1013 a_403_136# B a_84_74# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/maj3/sky130_fd_sc_ms__maj3_2.spice b/cells/maj3/sky130_fd_sc_ms__maj3_2.spice
index a36ef76..615a4b7 100644
--- a/cells/maj3/sky130_fd_sc_ms__maj3_2.spice
+++ b/cells/maj3/sky130_fd_sc_ms__maj3_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__maj3_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__maj3_2 A B C VGND VNB VPB VPWR X
 M1000 a_396_368# A VPWR VPB pshort w=1e+06u l=180000u
@@ -34,4 +49,3 @@
 M1015 a_87_264# C a_793_368# VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/maj3/sky130_fd_sc_ms__maj3_4.spice b/cells/maj3/sky130_fd_sc_ms__maj3_4.spice
index 69352b8..e94f28f 100644
--- a/cells/maj3/sky130_fd_sc_ms__maj3_4.spice
+++ b/cells/maj3/sky130_fd_sc_ms__maj3_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__maj3_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__maj3_4 A B C VGND VNB VPB VPWR X
 M1000 a_222_392# B a_504_125# VNB nlowvt w=640000u l=150000u
@@ -66,4 +81,3 @@
 M1031 a_222_392# B a_504_392# VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2/sky130_fd_sc_ms__mux2_1.spice b/cells/mux2/sky130_fd_sc_ms__mux2_1.spice
index 0924f83..269d05b 100644
--- a/cells/mux2/sky130_fd_sc_ms__mux2_1.spice
+++ b/cells/mux2/sky130_fd_sc_ms__mux2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__mux2_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__mux2_1 A0 A1 S VGND VNB VPB VPWR X
 M1000 a_304_74# A0 a_226_368# VPB pshort w=1e+06u l=180000u
@@ -26,4 +41,3 @@
 M1011 a_226_368# S VPWR VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2/sky130_fd_sc_ms__mux2_2.spice b/cells/mux2/sky130_fd_sc_ms__mux2_2.spice
index d39309e..fdee4b7 100644
--- a/cells/mux2/sky130_fd_sc_ms__mux2_2.spice
+++ b/cells/mux2/sky130_fd_sc_ms__mux2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__mux2_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__mux2_2 A0 A1 S VGND VNB VPB VPWR X
 M1000 a_119_368# A0 a_27_368# VPB pshort w=1e+06u l=180000u
@@ -30,4 +45,3 @@
 M1013 VGND a_119_368# X VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2/sky130_fd_sc_ms__mux2_4.spice b/cells/mux2/sky130_fd_sc_ms__mux2_4.spice
index d0147c0..02f2b29 100644
--- a/cells/mux2/sky130_fd_sc_ms__mux2_4.spice
+++ b/cells/mux2/sky130_fd_sc_ms__mux2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__mux2_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__mux2_4 A0 A1 S VGND VNB VPB VPWR X
 M1000 X a_193_241# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -54,4 +69,3 @@
 M1025 a_709_119# A1 a_193_241# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2i/sky130_fd_sc_ms__mux2i_1.spice b/cells/mux2i/sky130_fd_sc_ms__mux2i_1.spice
index 9f4c377..f12354b 100644
--- a/cells/mux2i/sky130_fd_sc_ms__mux2i_1.spice
+++ b/cells/mux2i/sky130_fd_sc_ms__mux2i_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__mux2i_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__mux2i_1 A0 A1 S VGND VNB VPB VPWR Y
 M1000 Y A0 a_426_74# VNB nlowvt w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_114_74# S VPWR VPB pshort w=840000u l=180000u
 +  ad=2.184e+11p pd=2.2e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2i/sky130_fd_sc_ms__mux2i_2.spice b/cells/mux2i/sky130_fd_sc_ms__mux2i_2.spice
index c53a3ca..a4360e4 100644
--- a/cells/mux2i/sky130_fd_sc_ms__mux2i_2.spice
+++ b/cells/mux2i/sky130_fd_sc_ms__mux2i_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__mux2i_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__mux2i_2 A0 A1 S VGND VNB VPB VPWR Y
 M1000 VPWR a_922_72# a_343_368# VPB pshort w=1.12e+06u l=180000u
@@ -38,4 +53,3 @@
 M1017 a_115_74# a_922_72# VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2i/sky130_fd_sc_ms__mux2i_4.spice b/cells/mux2i/sky130_fd_sc_ms__mux2i_4.spice
index cb26d0b..212d6fb 100644
--- a/cells/mux2i/sky130_fd_sc_ms__mux2i_4.spice
+++ b/cells/mux2i/sky130_fd_sc_ms__mux2i_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__mux2i_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__mux2i_4 A0 A1 S VGND VNB VPB VPWR Y
 M1000 Y A1 a_114_85# VNB nlowvt w=740000u l=150000u
@@ -72,4 +87,3 @@
 M1034 a_475_85# A0 Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux4/sky130_fd_sc_ms__mux4_1.spice b/cells/mux4/sky130_fd_sc_ms__mux4_1.spice
index f26c4ec..45bc263 100644
--- a/cells/mux4/sky130_fd_sc_ms__mux4_1.spice
+++ b/cells/mux4/sky130_fd_sc_ms__mux4_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__mux4_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__mux4_1 A0 A1 A2 A3 S0 S1 VGND VNB VPB VPWR X
 M1000 VPWR A1 a_540_341# VPB pshort w=1e+06u l=180000u
@@ -54,4 +69,3 @@
 M1025 VGND A3 a_979_74# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux4/sky130_fd_sc_ms__mux4_2.spice b/cells/mux4/sky130_fd_sc_ms__mux4_2.spice
index 8f4746d..924323a 100644
--- a/cells/mux4/sky130_fd_sc_ms__mux4_2.spice
+++ b/cells/mux4/sky130_fd_sc_ms__mux4_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__mux4_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__mux4_2 A0 A1 A2 A3 S0 S1 VGND VNB VPB VPWR X
 M1000 VGND S0 a_31_94# VNB nlowvt w=640000u l=150000u
@@ -58,4 +73,3 @@
 M1027 VPWR S1 a_1500_94# VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=4.1e+11p ps=2.82e+06u
 .ends
-
diff --git a/cells/mux4/sky130_fd_sc_ms__mux4_4.spice b/cells/mux4/sky130_fd_sc_ms__mux4_4.spice
index 999f734..2905f18 100644
--- a/cells/mux4/sky130_fd_sc_ms__mux4_4.spice
+++ b/cells/mux4/sky130_fd_sc_ms__mux4_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__mux4_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__mux4_4 A0 A1 A2 A3 S0 S1 VGND VNB VPB VPWR X
 M1000 a_509_392# S0 a_299_392# VPB pshort w=1e+06u l=180000u
@@ -106,4 +121,3 @@
 M1051 X a_2199_74# VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand2/sky130_fd_sc_ms__nand2_1.spice b/cells/nand2/sky130_fd_sc_ms__nand2_1.spice
index 09ea6cf..6d48700 100644
--- a/cells/nand2/sky130_fd_sc_ms__nand2_1.spice
+++ b/cells/nand2/sky130_fd_sc_ms__nand2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nand2_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nand2_1 A B VGND VNB VPB VPWR Y
 M1000 Y A a_117_74# VNB nlowvt w=740000u l=150000u
@@ -10,4 +25,3 @@
 M1003 a_117_74# B VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=2.109e+11p ps=2.05e+06u
 .ends
-
diff --git a/cells/nand2/sky130_fd_sc_ms__nand2_2.spice b/cells/nand2/sky130_fd_sc_ms__nand2_2.spice
index fe597f1..67824f9 100644
--- a/cells/nand2/sky130_fd_sc_ms__nand2_2.spice
+++ b/cells/nand2/sky130_fd_sc_ms__nand2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nand2_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nand2_2 A B VGND VNB VPB VPWR Y
 M1000 Y B VPWR VPB pshort w=1.12e+06u l=180000u
@@ -18,4 +33,3 @@
 M1007 VGND B a_27_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand2/sky130_fd_sc_ms__nand2_4.spice b/cells/nand2/sky130_fd_sc_ms__nand2_4.spice
index c249add..9c76f74 100644
--- a/cells/nand2/sky130_fd_sc_ms__nand2_4.spice
+++ b/cells/nand2/sky130_fd_sc_ms__nand2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nand2_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nand2_4 A B VGND VNB VPB VPWR Y
 M1000 VPWR A Y VPB pshort w=1.12e+06u l=180000u
@@ -26,4 +41,3 @@
 M1011 a_27_74# B VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand2/sky130_fd_sc_ms__nand2_8.spice b/cells/nand2/sky130_fd_sc_ms__nand2_8.spice
index 51cb902..b2d156e 100644
--- a/cells/nand2/sky130_fd_sc_ms__nand2_8.spice
+++ b/cells/nand2/sky130_fd_sc_ms__nand2_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nand2_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nand2_8 A B VGND VNB VPB VPWR Y
 M1000 VGND B a_27_74# VNB nlowvt w=740000u l=150000u
@@ -50,4 +65,3 @@
 M1023 a_27_74# A Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand2b/sky130_fd_sc_ms__nand2b_1.spice b/cells/nand2b/sky130_fd_sc_ms__nand2b_1.spice
index 52cba68..1e6b430 100644
--- a/cells/nand2b/sky130_fd_sc_ms__nand2b_1.spice
+++ b/cells/nand2b/sky130_fd_sc_ms__nand2b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nand2b_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nand2b_1 A_N B VGND VNB VPB VPWR Y
 M1000 Y a_27_112# a_269_74# VNB nlowvt w=740000u l=150000u
@@ -14,4 +29,3 @@
 M1005 VPWR a_27_112# Y VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand2b/sky130_fd_sc_ms__nand2b_2.spice b/cells/nand2b/sky130_fd_sc_ms__nand2b_2.spice
index 569e285..c997e47 100644
--- a/cells/nand2b/sky130_fd_sc_ms__nand2b_2.spice
+++ b/cells/nand2b/sky130_fd_sc_ms__nand2b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nand2b_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nand2b_2 A_N B VGND VNB VPB VPWR Y
 M1000 Y a_27_74# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -22,4 +37,3 @@
 M1009 a_242_74# a_27_74# Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand2b/sky130_fd_sc_ms__nand2b_4.spice b/cells/nand2b/sky130_fd_sc_ms__nand2b_4.spice
index fcd43bc..8271964 100644
--- a/cells/nand2b/sky130_fd_sc_ms__nand2b_4.spice
+++ b/cells/nand2b/sky130_fd_sc_ms__nand2b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nand2b_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nand2b_4 A_N B VGND VNB VPB VPWR Y
 M1000 Y a_31_74# a_243_74# VNB nlowvt w=740000u l=150000u
@@ -32,4 +47,3 @@
 M1014 Y a_31_74# VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand3/sky130_fd_sc_ms__nand3_1.spice b/cells/nand3/sky130_fd_sc_ms__nand3_1.spice
index 86ce8ea..7e8ad12 100644
--- a/cells/nand3/sky130_fd_sc_ms__nand3_1.spice
+++ b/cells/nand3/sky130_fd_sc_ms__nand3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nand3_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nand3_1 A B C VGND VNB VPB VPWR Y
 M1000 Y A a_233_74# VNB nlowvt w=740000u l=150000u
@@ -14,4 +29,3 @@
 M1005 VPWR B Y VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand3/sky130_fd_sc_ms__nand3_2.spice b/cells/nand3/sky130_fd_sc_ms__nand3_2.spice
index dd612d9..d12600b 100644
--- a/cells/nand3/sky130_fd_sc_ms__nand3_2.spice
+++ b/cells/nand3/sky130_fd_sc_ms__nand3_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nand3_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nand3_2 A B C VGND VNB VPB VPWR Y
 M1000 a_27_74# C VGND VNB nlowvt w=740000u l=150000u
@@ -26,4 +41,3 @@
 M1011 Y A a_283_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand3/sky130_fd_sc_ms__nand3_4.spice b/cells/nand3/sky130_fd_sc_ms__nand3_4.spice
index 3716f57..bbb9948 100644
--- a/cells/nand3/sky130_fd_sc_ms__nand3_4.spice
+++ b/cells/nand3/sky130_fd_sc_ms__nand3_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nand3_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nand3_4 A B C VGND VNB VPB VPWR Y
 M1000 a_456_82# C VGND VNB nlowvt w=740000u l=150000u
@@ -38,4 +53,3 @@
 M1017 a_27_82# A Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand3b/sky130_fd_sc_ms__nand3b_1.spice b/cells/nand3b/sky130_fd_sc_ms__nand3b_1.spice
index 205bc95..fb0beb1 100644
--- a/cells/nand3b/sky130_fd_sc_ms__nand3b_1.spice
+++ b/cells/nand3b/sky130_fd_sc_ms__nand3b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nand3b_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nand3b_1 A_N B C VGND VNB VPB VPWR Y
 M1000 Y a_27_116# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -18,4 +33,3 @@
 M1007 a_347_78# B a_269_78# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand3b/sky130_fd_sc_ms__nand3b_2.spice b/cells/nand3b/sky130_fd_sc_ms__nand3b_2.spice
index 3497ad4..7aa839d 100644
--- a/cells/nand3b/sky130_fd_sc_ms__nand3b_2.spice
+++ b/cells/nand3b/sky130_fd_sc_ms__nand3b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nand3b_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nand3b_2 A_N B C VGND VNB VPB VPWR Y
 M1000 VPWR A_N a_27_94# VPB pshort w=1e+06u l=180000u
@@ -30,4 +45,3 @@
 M1013 Y C VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand3b/sky130_fd_sc_ms__nand3b_4.spice b/cells/nand3b/sky130_fd_sc_ms__nand3b_4.spice
index 891cce1..f11d3f1 100644
--- a/cells/nand3b/sky130_fd_sc_ms__nand3b_4.spice
+++ b/cells/nand3b/sky130_fd_sc_ms__nand3b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nand3b_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nand3b_4 A_N B C VGND VNB VPB VPWR Y
 M1000 VGND A_N a_89_172# VNB nlowvt w=740000u l=150000u
@@ -44,4 +59,3 @@
 M1020 VPWR A_N a_89_172# VPB pshort w=840000u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4/sky130_fd_sc_ms__nand4_1.spice b/cells/nand4/sky130_fd_sc_ms__nand4_1.spice
index 6900958..0b2ea86 100644
--- a/cells/nand4/sky130_fd_sc_ms__nand4_1.spice
+++ b/cells/nand4/sky130_fd_sc_ms__nand4_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nand4_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nand4_1 A B C D VGND VNB VPB VPWR Y
 M1000 a_181_74# D VGND VNB nlowvt w=740000u l=150000u
@@ -18,4 +33,3 @@
 M1007 Y A a_373_74# VNB nlowvt w=740000u l=150000u
 +  ad=2.085e+11p pd=2.05e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4/sky130_fd_sc_ms__nand4_2.spice b/cells/nand4/sky130_fd_sc_ms__nand4_2.spice
index 626faee..87973bf 100644
--- a/cells/nand4/sky130_fd_sc_ms__nand4_2.spice
+++ b/cells/nand4/sky130_fd_sc_ms__nand4_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nand4_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nand4_2 A B C D VGND VNB VPB VPWR Y
 M1000 VPWR C Y VPB pshort w=1.12e+06u l=180000u
@@ -34,4 +49,3 @@
 M1015 a_304_74# B a_515_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4/sky130_fd_sc_ms__nand4_4.spice b/cells/nand4/sky130_fd_sc_ms__nand4_4.spice
index d7dab21..162398b 100644
--- a/cells/nand4/sky130_fd_sc_ms__nand4_4.spice
+++ b/cells/nand4/sky130_fd_sc_ms__nand4_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nand4_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nand4_4 A B C D VGND VNB VPB VPWR Y
 M1000 VPWR B Y VPB pshort w=1.12e+06u l=180000u
@@ -50,4 +65,3 @@
 M1023 a_923_74# A Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4b/sky130_fd_sc_ms__nand4b_1.spice b/cells/nand4b/sky130_fd_sc_ms__nand4b_1.spice
index 49e4ac2..f01f9e9 100644
--- a/cells/nand4b/sky130_fd_sc_ms__nand4b_1.spice
+++ b/cells/nand4b/sky130_fd_sc_ms__nand4b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nand4b_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nand4b_1 A_N B C D VGND VNB VPB VPWR Y
 M1000 Y B VPWR VPB pshort w=1.12e+06u l=180000u
@@ -22,4 +37,3 @@
 M1009 a_341_74# C a_263_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4b/sky130_fd_sc_ms__nand4b_2.spice b/cells/nand4b/sky130_fd_sc_ms__nand4b_2.spice
index 728554d..7a4e3cc 100644
--- a/cells/nand4b/sky130_fd_sc_ms__nand4b_2.spice
+++ b/cells/nand4b/sky130_fd_sc_ms__nand4b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nand4b_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nand4b_2 A_N B C D VGND VNB VPB VPWR Y
 M1000 a_719_123# C a_490_74# VNB nlowvt w=740000u l=150000u
@@ -38,4 +53,3 @@
 M1017 VPWR B Y VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4b/sky130_fd_sc_ms__nand4b_4.spice b/cells/nand4b/sky130_fd_sc_ms__nand4b_4.spice
index ba23ad6..4496caa 100644
--- a/cells/nand4b/sky130_fd_sc_ms__nand4b_4.spice
+++ b/cells/nand4b/sky130_fd_sc_ms__nand4b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nand4b_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nand4b_4 A_N B C D VGND VNB VPB VPWR Y
 M1000 a_656_74# C a_1025_158# VNB nlowvt w=740000u l=150000u
@@ -56,4 +71,3 @@
 M1026 a_656_74# C a_1025_158# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4bb/sky130_fd_sc_ms__nand4bb_1.spice b/cells/nand4bb/sky130_fd_sc_ms__nand4bb_1.spice
index 160e0c4..afdb530 100644
--- a/cells/nand4bb/sky130_fd_sc_ms__nand4bb_1.spice
+++ b/cells/nand4bb/sky130_fd_sc_ms__nand4bb_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nand4bb_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nand4bb_1 A_N B_N C D VGND VNB VPB VPWR Y
 M1000 a_229_398# B_N VGND VNB nlowvt w=550000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_627_74# C a_513_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4bb/sky130_fd_sc_ms__nand4bb_2.spice b/cells/nand4bb/sky130_fd_sc_ms__nand4bb_2.spice
index bdc171a..52e307c 100644
--- a/cells/nand4bb/sky130_fd_sc_ms__nand4bb_2.spice
+++ b/cells/nand4bb/sky130_fd_sc_ms__nand4bb_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nand4bb_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nand4bb_2 A_N B_N C D VGND VNB VPB VPWR Y
 M1000 Y a_231_74# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -42,4 +57,3 @@
 M1019 a_678_74# C a_886_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4bb/sky130_fd_sc_ms__nand4bb_4.spice b/cells/nand4bb/sky130_fd_sc_ms__nand4bb_4.spice
index 1f4ab0c..c47ed54 100644
--- a/cells/nand4bb/sky130_fd_sc_ms__nand4bb_4.spice
+++ b/cells/nand4bb/sky130_fd_sc_ms__nand4bb_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nand4bb_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nand4bb_4 A_N B_N C D VGND VNB VPB VPWR Y
 M1000 VPWR a_27_114# Y VPB pshort w=1.12e+06u l=180000u
@@ -78,4 +93,3 @@
 M1037 a_1229_74# C a_828_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2/sky130_fd_sc_ms__nor2_1.spice b/cells/nor2/sky130_fd_sc_ms__nor2_1.spice
index 8a944fd..418c3f0 100644
--- a/cells/nor2/sky130_fd_sc_ms__nor2_1.spice
+++ b/cells/nor2/sky130_fd_sc_ms__nor2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nor2_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nor2_1 A B VGND VNB VPB VPWR Y
 M1000 a_119_368# A VPWR VPB pshort w=1.12e+06u l=180000u
@@ -10,4 +25,3 @@
 M1003 Y A VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2/sky130_fd_sc_ms__nor2_2.spice b/cells/nor2/sky130_fd_sc_ms__nor2_2.spice
index 9420074..cecb52e 100644
--- a/cells/nor2/sky130_fd_sc_ms__nor2_2.spice
+++ b/cells/nor2/sky130_fd_sc_ms__nor2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nor2_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nor2_2 A B VGND VNB VPB VPWR Y
 M1000 VGND A Y VNB nlowvt w=740000u l=150000u
@@ -14,4 +29,3 @@
 M1005 a_35_368# A VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2/sky130_fd_sc_ms__nor2_4.spice b/cells/nor2/sky130_fd_sc_ms__nor2_4.spice
index f98262e..6ab927f 100644
--- a/cells/nor2/sky130_fd_sc_ms__nor2_4.spice
+++ b/cells/nor2/sky130_fd_sc_ms__nor2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nor2_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nor2_4 A B VGND VNB VPB VPWR Y
 M1000 VPWR A a_27_368# VPB pshort w=1.12e+06u l=180000u
@@ -26,4 +41,3 @@
 M1011 VGND B Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2/sky130_fd_sc_ms__nor2_8.spice b/cells/nor2/sky130_fd_sc_ms__nor2_8.spice
index e4b55fc..9293043 100644
--- a/cells/nor2/sky130_fd_sc_ms__nor2_8.spice
+++ b/cells/nor2/sky130_fd_sc_ms__nor2_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nor2_8.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nor2_8 A B VGND VNB VPB VPWR Y
 M1000 VGND B Y VNB nlowvt w=740000u l=150000u
@@ -50,4 +65,3 @@
 M1023 Y B VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2b/sky130_fd_sc_ms__nor2b_1.spice b/cells/nor2b/sky130_fd_sc_ms__nor2b_1.spice
index f998462..5f74b3b 100644
--- a/cells/nor2b/sky130_fd_sc_ms__nor2b_1.spice
+++ b/cells/nor2b/sky130_fd_sc_ms__nor2b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nor2b_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nor2b_1 A B_N VGND VNB VPB VPWR Y
 M1000 a_281_368# A VPWR VPB pshort w=1.12e+06u l=180000u
@@ -14,4 +29,3 @@
 M1005 Y A VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2b/sky130_fd_sc_ms__nor2b_2.spice b/cells/nor2b/sky130_fd_sc_ms__nor2b_2.spice
index 46aea78..070b0b1 100644
--- a/cells/nor2b/sky130_fd_sc_ms__nor2b_2.spice
+++ b/cells/nor2b/sky130_fd_sc_ms__nor2b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nor2b_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nor2b_2 A B_N VGND VNB VPB VPWR Y
 M1000 a_228_368# a_27_392# Y VPB pshort w=1.12e+06u l=180000u
@@ -22,4 +37,3 @@
 M1009 Y a_27_392# a_228_368# VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2b/sky130_fd_sc_ms__nor2b_4.spice b/cells/nor2b/sky130_fd_sc_ms__nor2b_4.spice
index d5086c5..4ccc2cc 100644
--- a/cells/nor2b/sky130_fd_sc_ms__nor2b_4.spice
+++ b/cells/nor2b/sky130_fd_sc_ms__nor2b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nor2b_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nor2b_4 A B_N VGND VNB VPB VPWR Y
 M1000 a_353_323# B_N VPWR VPB pshort w=840000u l=180000u
@@ -32,4 +47,3 @@
 M1014 VGND a_353_323# Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor3/sky130_fd_sc_ms__nor3_1.spice b/cells/nor3/sky130_fd_sc_ms__nor3_1.spice
index 1698abc..424cabd 100644
--- a/cells/nor3/sky130_fd_sc_ms__nor3_1.spice
+++ b/cells/nor3/sky130_fd_sc_ms__nor3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nor3_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nor3_1 A B C VGND VNB VPB VPWR Y
 M1000 Y C a_201_368# VPB pshort w=1.12e+06u l=180000u
@@ -14,4 +29,3 @@
 M1005 a_201_368# B a_117_368# VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor3/sky130_fd_sc_ms__nor3_2.spice b/cells/nor3/sky130_fd_sc_ms__nor3_2.spice
index 4953926..bfdcf1c 100644
--- a/cells/nor3/sky130_fd_sc_ms__nor3_2.spice
+++ b/cells/nor3/sky130_fd_sc_ms__nor3_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nor3_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nor3_2 A B C VGND VNB VPB VPWR Y
 M1000 a_27_368# C Y VPB pshort w=1.12e+06u l=180000u
@@ -20,4 +35,3 @@
 M1008 Y B VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor3/sky130_fd_sc_ms__nor3_4.spice b/cells/nor3/sky130_fd_sc_ms__nor3_4.spice
index a32716c..f7005d4 100644
--- a/cells/nor3/sky130_fd_sc_ms__nor3_4.spice
+++ b/cells/nor3/sky130_fd_sc_ms__nor3_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nor3_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nor3_4 A B C VGND VNB VPB VPWR Y
 M1000 Y C a_298_368# VPB pshort w=1.12e+06u l=180000u
@@ -38,4 +53,3 @@
 M1017 a_298_368# C Y VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor3b/sky130_fd_sc_ms__nor3b_1.spice b/cells/nor3b/sky130_fd_sc_ms__nor3b_1.spice
index a84c3b6..0184fb6 100644
--- a/cells/nor3b/sky130_fd_sc_ms__nor3b_1.spice
+++ b/cells/nor3b/sky130_fd_sc_ms__nor3b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nor3b_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nor3b_1 A B C_N VGND VNB VPB VPWR Y
 M1000 Y a_27_112# VGND VNB nlowvt w=740000u l=150000u
@@ -18,4 +33,3 @@
 M1007 Y A VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor3b/sky130_fd_sc_ms__nor3b_2.spice b/cells/nor3b/sky130_fd_sc_ms__nor3b_2.spice
index ec17541..1ce189c 100644
--- a/cells/nor3b/sky130_fd_sc_ms__nor3b_2.spice
+++ b/cells/nor3b/sky130_fd_sc_ms__nor3b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nor3b_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nor3b_2 A B C_N VGND VNB VPB VPWR Y
 M1000 VGND a_27_392# Y VNB nlowvt w=740000u l=150000u
@@ -30,4 +45,3 @@
 M1013 VGND B Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor3b/sky130_fd_sc_ms__nor3b_4.spice b/cells/nor3b/sky130_fd_sc_ms__nor3b_4.spice
index f81d8fd..372cf3b 100644
--- a/cells/nor3b/sky130_fd_sc_ms__nor3b_4.spice
+++ b/cells/nor3b/sky130_fd_sc_ms__nor3b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nor3b_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nor3b_4 A B C_N VGND VNB VPB VPWR Y
 M1000 VGND a_468_264# Y VNB nlowvt w=740000u l=150000u
@@ -56,4 +71,3 @@
 M1026 Y B VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4/sky130_fd_sc_ms__nor4_1.spice b/cells/nor4/sky130_fd_sc_ms__nor4_1.spice
index 9d1fbb4..2ac4603 100644
--- a/cells/nor4/sky130_fd_sc_ms__nor4_1.spice
+++ b/cells/nor4/sky130_fd_sc_ms__nor4_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nor4_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nor4_1 A B C D VGND VNB VPB VPWR Y
 M1000 Y A VGND VNB nlowvt w=740000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VGND D Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4/sky130_fd_sc_ms__nor4_2.spice b/cells/nor4/sky130_fd_sc_ms__nor4_2.spice
index 1e67f89..bb53627 100644
--- a/cells/nor4/sky130_fd_sc_ms__nor4_2.spice
+++ b/cells/nor4/sky130_fd_sc_ms__nor4_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nor4_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nor4_2 A B C D VGND VNB VPB VPWR Y
 M1000 VGND A Y VNB nlowvt w=740000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_27_368# B a_493_368# VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4/sky130_fd_sc_ms__nor4_4.spice b/cells/nor4/sky130_fd_sc_ms__nor4_4.spice
index a5ca59e..a606fd0 100644
--- a/cells/nor4/sky130_fd_sc_ms__nor4_4.spice
+++ b/cells/nor4/sky130_fd_sc_ms__nor4_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nor4_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nor4_4 A B C D VGND VNB VPB VPWR Y
 M1000 a_499_368# B a_879_368# VPB pshort w=1.12e+06u l=180000u
@@ -50,4 +65,3 @@
 M1023 Y C VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4b/sky130_fd_sc_ms__nor4b_1.spice b/cells/nor4b/sky130_fd_sc_ms__nor4b_1.spice
index 6844893..d5f8969 100644
--- a/cells/nor4b/sky130_fd_sc_ms__nor4b_1.spice
+++ b/cells/nor4b/sky130_fd_sc_ms__nor4b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nor4b_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nor4b_1 A B C D_N VGND VNB VPB VPWR Y
 M1000 Y C VGND VNB nlowvt w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 Y A VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4b/sky130_fd_sc_ms__nor4b_2.spice b/cells/nor4b/sky130_fd_sc_ms__nor4b_2.spice
index c3276e7..33e6446 100644
--- a/cells/nor4b/sky130_fd_sc_ms__nor4b_2.spice
+++ b/cells/nor4b/sky130_fd_sc_ms__nor4b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nor4b_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nor4b_2 A B C D_N VGND VNB VPB VPWR Y
 M1000 VGND D_N a_27_392# VNB nlowvt w=640000u l=150000u
@@ -38,4 +53,3 @@
 M1017 Y C VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4b/sky130_fd_sc_ms__nor4b_4.spice b/cells/nor4b/sky130_fd_sc_ms__nor4b_4.spice
index 60350ea..06e2e9a 100644
--- a/cells/nor4b/sky130_fd_sc_ms__nor4b_4.spice
+++ b/cells/nor4b/sky130_fd_sc_ms__nor4b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nor4b_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nor4b_4 A B C D_N VGND VNB VPB VPWR Y
 M1000 a_781_368# C a_319_368# VPB pshort w=1.12e+06u l=180000u
@@ -72,4 +87,3 @@
 M1034 VGND C Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4bb/sky130_fd_sc_ms__nor4bb_1.spice b/cells/nor4bb/sky130_fd_sc_ms__nor4bb_1.spice
index b6811f2..894dcae 100644
--- a/cells/nor4bb/sky130_fd_sc_ms__nor4bb_1.spice
+++ b/cells/nor4bb/sky130_fd_sc_ms__nor4bb_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nor4bb_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nor4bb_1 A B C_N D_N VGND VNB VPB VPWR Y
 M1000 a_611_244# D_N VPWR VPB pshort w=840000u l=180000u
@@ -26,4 +41,3 @@
 M1011 a_316_368# A VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4bb/sky130_fd_sc_ms__nor4bb_2.spice b/cells/nor4bb/sky130_fd_sc_ms__nor4bb_2.spice
index 3b8f633..20041bb 100644
--- a/cells/nor4bb/sky130_fd_sc_ms__nor4bb_2.spice
+++ b/cells/nor4bb/sky130_fd_sc_ms__nor4bb_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nor4bb_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nor4bb_2 A B C_N D_N VGND VNB VPB VPWR Y
 M1000 VGND A Y VNB nlowvt w=740000u l=150000u
@@ -42,4 +57,3 @@
 M1019 VGND C_N a_27_392# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=1.824e+11p ps=1.85e+06u
 .ends
-
diff --git a/cells/nor4bb/sky130_fd_sc_ms__nor4bb_4.spice b/cells/nor4bb/sky130_fd_sc_ms__nor4bb_4.spice
index 02af13d..9aef49e 100644
--- a/cells/nor4bb/sky130_fd_sc_ms__nor4bb_4.spice
+++ b/cells/nor4bb/sky130_fd_sc_ms__nor4bb_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__nor4bb_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__nor4bb_4 A B C_N D_N VGND VNB VPB VPWR Y
 M1000 Y B VGND VNB nlowvt w=740000u l=150000u
@@ -78,4 +93,3 @@
 M1037 a_27_368# B a_119_368# VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2111a/sky130_fd_sc_ms__o2111a_1.spice b/cells/o2111a/sky130_fd_sc_ms__o2111a_1.spice
index a7a8f3e..58f9fd4 100644
--- a/cells/o2111a/sky130_fd_sc_ms__o2111a_1.spice
+++ b/cells/o2111a/sky130_fd_sc_ms__o2111a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o2111a_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o2111a_1 A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 a_393_74# C1 a_321_74# VNB nlowvt w=740000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_321_74# D1 a_82_48# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=2.59e+11p ps=2.18e+06u
 .ends
-
diff --git a/cells/o2111a/sky130_fd_sc_ms__o2111a_2.spice b/cells/o2111a/sky130_fd_sc_ms__o2111a_2.spice
index fce1ee7..99ec208 100644
--- a/cells/o2111a/sky130_fd_sc_ms__o2111a_2.spice
+++ b/cells/o2111a/sky130_fd_sc_ms__o2111a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o2111a_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o2111a_2 A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 VPWR D1 a_239_368# VPB pshort w=1e+06u l=180000u
@@ -30,4 +45,3 @@
 M1013 a_369_74# B1 a_54_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2111a/sky130_fd_sc_ms__o2111a_4.spice b/cells/o2111a/sky130_fd_sc_ms__o2111a_4.spice
index f70ef8d..5c95935 100644
--- a/cells/o2111a/sky130_fd_sc_ms__o2111a_4.spice
+++ b/cells/o2111a/sky130_fd_sc_ms__o2111a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o2111a_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o2111a_4 A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 VPWR D1 a_27_392# VPB pshort w=840000u l=180000u
@@ -58,4 +73,3 @@
 M1027 VGND A2 a_477_198# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2111ai/sky130_fd_sc_ms__o2111ai_1.spice b/cells/o2111ai/sky130_fd_sc_ms__o2111ai_1.spice
index dcd1981..9b08cb1 100644
--- a/cells/o2111ai/sky130_fd_sc_ms__o2111ai_1.spice
+++ b/cells/o2111ai/sky130_fd_sc_ms__o2111ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o2111ai_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o2111ai_1 A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 a_368_74# B1 a_260_74# VNB nlowvt w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR C1 Y VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2111ai/sky130_fd_sc_ms__o2111ai_2.spice b/cells/o2111ai/sky130_fd_sc_ms__o2111ai_2.spice
index 137a5a7..f23080e 100644
--- a/cells/o2111ai/sky130_fd_sc_ms__o2111ai_2.spice
+++ b/cells/o2111ai/sky130_fd_sc_ms__o2111ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o2111ai_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o2111ai_2 A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 a_510_74# A2 VGND VNB nlowvt w=740000u l=150000u
@@ -42,4 +57,3 @@
 M1019 VGND A2 a_510_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2111ai/sky130_fd_sc_ms__o2111ai_4.spice b/cells/o2111ai/sky130_fd_sc_ms__o2111ai_4.spice
index bfbb9be..aa9ad24 100644
--- a/cells/o2111ai/sky130_fd_sc_ms__o2111ai_4.spice
+++ b/cells/o2111ai/sky130_fd_sc_ms__o2111ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o2111ai_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o2111ai_4 A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 a_954_368# A2 Y VPB pshort w=1.12e+06u l=180000u
@@ -70,4 +85,3 @@
 M1033 a_954_368# A2 Y VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o211a/sky130_fd_sc_ms__o211a_1.spice b/cells/o211a/sky130_fd_sc_ms__o211a_1.spice
index ed7f6f6..a1a6ef3 100644
--- a/cells/o211a/sky130_fd_sc_ms__o211a_1.spice
+++ b/cells/o211a/sky130_fd_sc_ms__o211a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o211a_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o211a_1 A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 VPWR a_83_264# X VPB pshort w=1.12e+06u l=180000u
@@ -22,4 +37,3 @@
 M1009 VGND a_83_264# X VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=2.109e+11p ps=2.05e+06u
 .ends
-
diff --git a/cells/o211a/sky130_fd_sc_ms__o211a_2.spice b/cells/o211a/sky130_fd_sc_ms__o211a_2.spice
index 08728aa..99e6a2f 100644
--- a/cells/o211a/sky130_fd_sc_ms__o211a_2.spice
+++ b/cells/o211a/sky130_fd_sc_ms__o211a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o211a_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o211a_2 A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 a_195_74# A1 VGND VNB nlowvt w=740000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_117_74# C1 a_27_368# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=2.109e+11p ps=2.05e+06u
 .ends
-
diff --git a/cells/o211a/sky130_fd_sc_ms__o211a_4.spice b/cells/o211a/sky130_fd_sc_ms__o211a_4.spice
index dbcea5e..2ec9a86 100644
--- a/cells/o211a/sky130_fd_sc_ms__o211a_4.spice
+++ b/cells/o211a/sky130_fd_sc_ms__o211a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o211a_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o211a_4 A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 VPWR C1 a_91_48# VPB pshort w=840000u l=180000u
@@ -50,4 +65,3 @@
 M1023 a_91_48# B1 VPWR VPB pshort w=840000u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o211ai/sky130_fd_sc_ms__o211ai_1.spice b/cells/o211ai/sky130_fd_sc_ms__o211ai_1.spice
index 0ccd5d4..12111a3 100644
--- a/cells/o211ai/sky130_fd_sc_ms__o211ai_1.spice
+++ b/cells/o211ai/sky130_fd_sc_ms__o211ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o211ai_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o211ai_1 A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_31_74# A2 VGND VNB nlowvt w=740000u l=150000u
@@ -18,4 +33,3 @@
 M1007 Y C1 a_311_74# VNB nlowvt w=740000u l=150000u
 +  ad=4.588e+11p pd=2.72e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/o211ai/sky130_fd_sc_ms__o211ai_2.spice b/cells/o211ai/sky130_fd_sc_ms__o211ai_2.spice
index b3a2786..78648e7 100644
--- a/cells/o211ai/sky130_fd_sc_ms__o211ai_2.spice
+++ b/cells/o211ai/sky130_fd_sc_ms__o211ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o211ai_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o211ai_2 A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_303_84# B1 a_30_84# VNB nlowvt w=740000u l=150000u
@@ -34,4 +49,3 @@
 M1015 a_30_84# B1 a_303_84# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o211ai/sky130_fd_sc_ms__o211ai_4.spice b/cells/o211ai/sky130_fd_sc_ms__o211ai_4.spice
index c88b92d..a44d45b 100644
--- a/cells/o211ai/sky130_fd_sc_ms__o211ai_4.spice
+++ b/cells/o211ai/sky130_fd_sc_ms__o211ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o211ai_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o211ai_4 A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 Y C1 a_834_74# VNB nlowvt w=740000u l=150000u
@@ -58,4 +73,3 @@
 M1027 VGND A1 a_27_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21a/sky130_fd_sc_ms__o21a_1.spice b/cells/o21a/sky130_fd_sc_ms__o21a_1.spice
index feb8ccb..1c94f99 100644
--- a/cells/o21a/sky130_fd_sc_ms__o21a_1.spice
+++ b/cells/o21a/sky130_fd_sc_ms__o21a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o21a_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o21a_1 A1 A2 B1 VGND VNB VPB VPWR X
 M1000 a_83_244# B1 VPWR VPB pshort w=840000u l=180000u
@@ -18,4 +33,3 @@
 M1007 a_379_387# A2 a_83_244# VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21a/sky130_fd_sc_ms__o21a_2.spice b/cells/o21a/sky130_fd_sc_ms__o21a_2.spice
index e385a7e..3bb04d6 100644
--- a/cells/o21a/sky130_fd_sc_ms__o21a_2.spice
+++ b/cells/o21a/sky130_fd_sc_ms__o21a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o21a_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o21a_2 A1 A2 B1 VGND VNB VPB VPWR X
 M1000 VPWR B1 a_247_368# VPB pshort w=1e+06u l=180000u
@@ -22,4 +37,3 @@
 M1009 a_247_368# B1 a_54_74# VNB nlowvt w=740000u l=150000u
 +  ad=2.627e+11p pd=2.19e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/o21a/sky130_fd_sc_ms__o21a_4.spice b/cells/o21a/sky130_fd_sc_ms__o21a_4.spice
index ffe7aeb..e68a148 100644
--- a/cells/o21a/sky130_fd_sc_ms__o21a_4.spice
+++ b/cells/o21a/sky130_fd_sc_ms__o21a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o21a_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o21a_4 A1 A2 B1 VGND VNB VPB VPWR X
 M1000 a_219_387# B1 VPWR VPB pshort w=840000u l=180000u
@@ -42,4 +57,3 @@
 M1019 a_219_387# B1 a_27_125# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21ai/sky130_fd_sc_ms__o21ai_1.spice b/cells/o21ai/sky130_fd_sc_ms__o21ai_1.spice
index 4e6e5fd..03647dd 100644
--- a/cells/o21ai/sky130_fd_sc_ms__o21ai_1.spice
+++ b/cells/o21ai/sky130_fd_sc_ms__o21ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o21ai_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o21ai_1 A1 A2 B1 VGND VNB VPB VPWR Y
 M1000 a_27_74# A2 VGND VNB nlowvt w=740000u l=150000u
@@ -14,4 +29,3 @@
 M1005 VGND A1 a_27_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21ai/sky130_fd_sc_ms__o21ai_2.spice b/cells/o21ai/sky130_fd_sc_ms__o21ai_2.spice
index 0c5750a..d4238c6 100644
--- a/cells/o21ai/sky130_fd_sc_ms__o21ai_2.spice
+++ b/cells/o21ai/sky130_fd_sc_ms__o21ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o21ai_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o21ai_2 A1 A2 B1 VGND VNB VPB VPWR Y
 M1000 VPWR A1 a_119_368# VPB pshort w=1.12e+06u l=180000u
@@ -26,4 +41,3 @@
 M1011 VGND A2 a_27_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21ai/sky130_fd_sc_ms__o21ai_4.spice b/cells/o21ai/sky130_fd_sc_ms__o21ai_4.spice
index 1c3e478..92001b0 100644
--- a/cells/o21ai/sky130_fd_sc_ms__o21ai_4.spice
+++ b/cells/o21ai/sky130_fd_sc_ms__o21ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o21ai_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o21ai_4 A1 A2 B1 VGND VNB VPB VPWR Y
 M1000 VGND A2 a_27_74# VNB nlowvt w=740000u l=150000u
@@ -46,4 +61,3 @@
 M1021 a_27_74# A1 VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21ba/sky130_fd_sc_ms__o21ba_1.spice b/cells/o21ba/sky130_fd_sc_ms__o21ba_1.spice
index 15943cd..e8ca27c 100644
--- a/cells/o21ba/sky130_fd_sc_ms__o21ba_1.spice
+++ b/cells/o21ba/sky130_fd_sc_ms__o21ba_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o21ba_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o21ba_1 A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 X a_203_392# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -22,4 +37,3 @@
 M1009 a_27_74# A2 VGND VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21ba/sky130_fd_sc_ms__o21ba_2.spice b/cells/o21ba/sky130_fd_sc_ms__o21ba_2.spice
index 4876d15..3cbb0df 100644
--- a/cells/o21ba/sky130_fd_sc_ms__o21ba_2.spice
+++ b/cells/o21ba/sky130_fd_sc_ms__o21ba_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o21ba_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o21ba_2 A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 a_585_368# A2 a_177_48# VPB pshort w=1e+06u l=180000u
@@ -26,4 +41,3 @@
 M1011 a_487_74# a_27_74# a_177_48# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=2.035e+11p ps=2.03e+06u
 .ends
-
diff --git a/cells/o21ba/sky130_fd_sc_ms__o21ba_4.spice b/cells/o21ba/sky130_fd_sc_ms__o21ba_4.spice
index 909e438..64f9e96 100644
--- a/cells/o21ba/sky130_fd_sc_ms__o21ba_4.spice
+++ b/cells/o21ba/sky130_fd_sc_ms__o21ba_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o21ba_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o21ba_4 A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 VPWR A1 a_895_392# VPB pshort w=1e+06u l=180000u
@@ -46,4 +61,3 @@
 M1021 a_895_392# A2 a_193_48# VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21bai/sky130_fd_sc_ms__o21bai_1.spice b/cells/o21bai/sky130_fd_sc_ms__o21bai_1.spice
index 099e44d..a2c366f 100644
--- a/cells/o21bai/sky130_fd_sc_ms__o21bai_1.spice
+++ b/cells/o21bai/sky130_fd_sc_ms__o21bai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o21bai_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o21bai_1 A1 A2 B1_N VGND VNB VPB VPWR Y
 M1000 VPWR A1 a_398_368# VPB pshort w=1.12e+06u l=180000u
@@ -18,4 +33,3 @@
 M1007 a_398_368# A2 Y VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21bai/sky130_fd_sc_ms__o21bai_2.spice b/cells/o21bai/sky130_fd_sc_ms__o21bai_2.spice
index bf57d7b..1498b8c 100644
--- a/cells/o21bai/sky130_fd_sc_ms__o21bai_2.spice
+++ b/cells/o21bai/sky130_fd_sc_ms__o21bai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o21bai_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o21bai_2 A1 A2 B1_N VGND VNB VPB VPWR Y
 M1000 VPWR B1_N a_27_74# VPB pshort w=1e+06u l=180000u
@@ -30,4 +45,3 @@
 M1013 Y a_27_74# a_225_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21bai/sky130_fd_sc_ms__o21bai_4.spice b/cells/o21bai/sky130_fd_sc_ms__o21bai_4.spice
index 4d9f03d..b1eaeb3 100644
--- a/cells/o21bai/sky130_fd_sc_ms__o21bai_4.spice
+++ b/cells/o21bai/sky130_fd_sc_ms__o21bai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o21bai_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o21bai_4 A1 A2 B1_N VGND VNB VPB VPWR Y
 M1000 Y a_828_48# a_27_74# VNB nlowvt w=740000u l=150000u
@@ -52,4 +67,3 @@
 M1024 VGND A2 a_27_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o221a/sky130_fd_sc_ms__o221a_1.spice b/cells/o221a/sky130_fd_sc_ms__o221a_1.spice
index 29322ff..8bdf590 100644
--- a/cells/o221a/sky130_fd_sc_ms__o221a_1.spice
+++ b/cells/o221a/sky130_fd_sc_ms__o221a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o221a_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o221a_1 A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 VGND A2 a_245_94# VNB nlowvt w=640000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_465_392# B2 a_83_264# VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o221a/sky130_fd_sc_ms__o221a_2.spice b/cells/o221a/sky130_fd_sc_ms__o221a_2.spice
index 707e8d5..f785907 100644
--- a/cells/o221a/sky130_fd_sc_ms__o221a_2.spice
+++ b/cells/o221a/sky130_fd_sc_ms__o221a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o221a_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o221a_2 A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 VGND a_27_368# X VNB nlowvt w=740000u l=150000u
@@ -30,4 +45,3 @@
 M1013 VPWR a_27_368# X VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o221a/sky130_fd_sc_ms__o221a_4.spice b/cells/o221a/sky130_fd_sc_ms__o221a_4.spice
index 136b37b..5a1a37b 100644
--- a/cells/o221a/sky130_fd_sc_ms__o221a_4.spice
+++ b/cells/o221a/sky130_fd_sc_ms__o221a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o221a_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o221a_4 A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 X a_114_125# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -58,4 +73,3 @@
 M1027 VGND a_114_125# X VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o221ai/sky130_fd_sc_ms__o221ai_1.spice b/cells/o221ai/sky130_fd_sc_ms__o221ai_1.spice
index edf126b..6a2ac74 100644
--- a/cells/o221ai/sky130_fd_sc_ms__o221ai_1.spice
+++ b/cells/o221ai/sky130_fd_sc_ms__o221ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o221ai_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o221ai_1 A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 VGND A2 a_239_74# VNB nlowvt w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_114_74# C1 Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=2.109e+11p ps=2.05e+06u
 .ends
-
diff --git a/cells/o221ai/sky130_fd_sc_ms__o221ai_2.spice b/cells/o221ai/sky130_fd_sc_ms__o221ai_2.spice
index e10d167..dcff7d1 100644
--- a/cells/o221ai/sky130_fd_sc_ms__o221ai_2.spice
+++ b/cells/o221ai/sky130_fd_sc_ms__o221ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o221ai_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o221ai_2 A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 a_311_85# B2 a_27_74# VNB nlowvt w=740000u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_311_85# A1 VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o221ai/sky130_fd_sc_ms__o221ai_4.spice b/cells/o221ai/sky130_fd_sc_ms__o221ai_4.spice
index e5eb570..12e983c 100644
--- a/cells/o221ai/sky130_fd_sc_ms__o221ai_4.spice
+++ b/cells/o221ai/sky130_fd_sc_ms__o221ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o221ai_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o221ai_4 A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 a_27_84# C1 Y VNB nlowvt w=740000u l=150000u
@@ -82,4 +97,3 @@
 M1039 VPWR A1 a_1291_368# VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o22a/sky130_fd_sc_ms__o22a_1.spice b/cells/o22a/sky130_fd_sc_ms__o22a_1.spice
index 6346d97..284245d 100644
--- a/cells/o22a/sky130_fd_sc_ms__o22a_1.spice
+++ b/cells/o22a/sky130_fd_sc_ms__o22a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o22a_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o22a_1 A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 a_299_139# A1 VGND VNB nlowvt w=640000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND a_83_260# X VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=2.109e+11p ps=2.05e+06u
 .ends
-
diff --git a/cells/o22a/sky130_fd_sc_ms__o22a_2.spice b/cells/o22a/sky130_fd_sc_ms__o22a_2.spice
index 61defff..8f2f3a5 100644
--- a/cells/o22a/sky130_fd_sc_ms__o22a_2.spice
+++ b/cells/o22a/sky130_fd_sc_ms__o22a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o22a_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o22a_2 A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 a_578_384# A2 a_82_48# VPB pshort w=1e+06u l=180000u
@@ -26,4 +41,3 @@
 M1011 a_307_74# B2 a_82_48# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o22a/sky130_fd_sc_ms__o22a_4.spice b/cells/o22a/sky130_fd_sc_ms__o22a_4.spice
index baf40ec..fb43a2d 100644
--- a/cells/o22a/sky130_fd_sc_ms__o22a_4.spice
+++ b/cells/o22a/sky130_fd_sc_ms__o22a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o22a_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o22a_4 A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 VPWR A1 a_119_392# VPB pshort w=1e+06u l=180000u
@@ -50,4 +65,3 @@
 M1023 a_209_392# B2 a_519_392# VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o22ai/sky130_fd_sc_ms__o22ai_1.spice b/cells/o22ai/sky130_fd_sc_ms__o22ai_1.spice
index 3c15507..d5241d5 100644
--- a/cells/o22ai/sky130_fd_sc_ms__o22ai_1.spice
+++ b/cells/o22ai/sky130_fd_sc_ms__o22ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o22ai_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o22ai_1 A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 Y B2 a_145_368# VPB pshort w=1.12e+06u l=180000u
@@ -18,4 +33,3 @@
 M1007 a_343_368# A2 Y VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o22ai/sky130_fd_sc_ms__o22ai_2.spice b/cells/o22ai/sky130_fd_sc_ms__o22ai_2.spice
index 821909b..0156043 100644
--- a/cells/o22ai/sky130_fd_sc_ms__o22ai_2.spice
+++ b/cells/o22ai/sky130_fd_sc_ms__o22ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o22ai_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o22ai_2 A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 Y B2 a_28_368# VPB pshort w=1.12e+06u l=180000u
@@ -34,4 +49,3 @@
 M1015 a_28_368# B1 VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o22ai/sky130_fd_sc_ms__o22ai_4.spice b/cells/o22ai/sky130_fd_sc_ms__o22ai_4.spice
index 82f69e9..2544fed 100644
--- a/cells/o22ai/sky130_fd_sc_ms__o22ai_4.spice
+++ b/cells/o22ai/sky130_fd_sc_ms__o22ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o22ai_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o22ai_4 A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_27_74# A1 VGND VNB nlowvt w=740000u l=150000u
@@ -66,4 +81,3 @@
 M1031 VGND A2 a_27_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2bb2a/sky130_fd_sc_ms__o2bb2a_1.spice b/cells/o2bb2a/sky130_fd_sc_ms__o2bb2a_1.spice
index 2d46519..81c041d 100644
--- a/cells/o2bb2a/sky130_fd_sc_ms__o2bb2a_1.spice
+++ b/cells/o2bb2a/sky130_fd_sc_ms__o2bb2a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o2bb2a_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o2bb2a_1 A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 a_236_384# A1_N VPWR VPB pshort w=840000u l=180000u
@@ -26,4 +41,3 @@
 M1011 VGND B2 a_588_74# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2bb2a/sky130_fd_sc_ms__o2bb2a_2.spice b/cells/o2bb2a/sky130_fd_sc_ms__o2bb2a_2.spice
index d3418b2..b8c3c30 100644
--- a/cells/o2bb2a/sky130_fd_sc_ms__o2bb2a_2.spice
+++ b/cells/o2bb2a/sky130_fd_sc_ms__o2bb2a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o2bb2a_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o2bb2a_2 A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 a_270_48# A2_N VPWR VPB pshort w=840000u l=180000u
@@ -30,4 +45,3 @@
 M1013 VGND a_204_392# X VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2bb2a/sky130_fd_sc_ms__o2bb2a_4.spice b/cells/o2bb2a/sky130_fd_sc_ms__o2bb2a_4.spice
index 1a36d73..49cea11 100644
--- a/cells/o2bb2a/sky130_fd_sc_ms__o2bb2a_4.spice
+++ b/cells/o2bb2a/sky130_fd_sc_ms__o2bb2a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o2bb2a_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o2bb2a_4 A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 VPWR B1 a_41_392# VPB pshort w=1e+06u l=180000u
@@ -50,4 +65,3 @@
 M1023 a_27_74# B1 VGND VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2bb2ai/sky130_fd_sc_ms__o2bb2ai_1.spice b/cells/o2bb2ai/sky130_fd_sc_ms__o2bb2ai_1.spice
index 1754cf0..c5dcd3d 100644
--- a/cells/o2bb2ai/sky130_fd_sc_ms__o2bb2ai_1.spice
+++ b/cells/o2bb2ai/sky130_fd_sc_ms__o2bb2ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o2bb2ai_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o2bb2ai_1 A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 a_397_74# B1 VGND VNB nlowvt w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_114_74# A1_N VGND VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2bb2ai/sky130_fd_sc_ms__o2bb2ai_2.spice b/cells/o2bb2ai/sky130_fd_sc_ms__o2bb2ai_2.spice
index 2ce50ba..fbb3b1a 100644
--- a/cells/o2bb2ai/sky130_fd_sc_ms__o2bb2ai_2.spice
+++ b/cells/o2bb2ai/sky130_fd_sc_ms__o2bb2ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o2bb2ai_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o2bb2ai_2 A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 Y a_136_387# a_518_74# VNB nlowvt w=740000u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_134_74# A2_N a_136_387# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2bb2ai/sky130_fd_sc_ms__o2bb2ai_4.spice b/cells/o2bb2ai/sky130_fd_sc_ms__o2bb2ai_4.spice
index 2ff716d..dd345dc 100644
--- a/cells/o2bb2ai/sky130_fd_sc_ms__o2bb2ai_4.spice
+++ b/cells/o2bb2ai/sky130_fd_sc_ms__o2bb2ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o2bb2ai_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o2bb2ai_4 A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 a_117_368# A2_N VPWR VPB pshort w=1.12e+06u l=180000u
@@ -82,4 +97,3 @@
 M1039 a_27_74# A2_N a_117_368# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o311a/sky130_fd_sc_ms__o311a_1.spice b/cells/o311a/sky130_fd_sc_ms__o311a_1.spice
index 94658a4..28d2d54 100644
--- a/cells/o311a/sky130_fd_sc_ms__o311a_1.spice
+++ b/cells/o311a/sky130_fd_sc_ms__o311a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o311a_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o311a_1 A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 VGND A1 a_209_74# VNB nlowvt w=640000u l=150000u
@@ -26,4 +41,3 @@
 M1011 X a_31_387# VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=3.136e+11p pd=2.8e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/o311a/sky130_fd_sc_ms__o311a_2.spice b/cells/o311a/sky130_fd_sc_ms__o311a_2.spice
index af1a251..fcc97ac 100644
--- a/cells/o311a/sky130_fd_sc_ms__o311a_2.spice
+++ b/cells/o311a/sky130_fd_sc_ms__o311a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o311a_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o311a_2 A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 a_219_74# A2 VGND VNB nlowvt w=740000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_219_74# B1 a_135_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o311a/sky130_fd_sc_ms__o311a_4.spice b/cells/o311a/sky130_fd_sc_ms__o311a_4.spice
index 49a0383..6c37b1a 100644
--- a/cells/o311a/sky130_fd_sc_ms__o311a_4.spice
+++ b/cells/o311a/sky130_fd_sc_ms__o311a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o311a_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o311a_4 A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 VPWR C1 a_83_244# VPB pshort w=1e+06u l=180000u
@@ -58,4 +73,3 @@
 M1027 VGND A1 a_564_78# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o311ai/sky130_fd_sc_ms__o311ai_1.spice b/cells/o311ai/sky130_fd_sc_ms__o311ai_1.spice
index 2752d2b..002a86b 100644
--- a/cells/o311ai/sky130_fd_sc_ms__o311ai_1.spice
+++ b/cells/o311ai/sky130_fd_sc_ms__o311ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o311ai_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o311ai_1 A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 Y C1 VPWR VPB pshort w=1.12e+06u l=180000u
@@ -22,4 +37,3 @@
 M1009 a_128_74# A3 VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o311ai/sky130_fd_sc_ms__o311ai_2.spice b/cells/o311ai/sky130_fd_sc_ms__o311ai_2.spice
index a198d9e..5a55470 100644
--- a/cells/o311ai/sky130_fd_sc_ms__o311ai_2.spice
+++ b/cells/o311ai/sky130_fd_sc_ms__o311ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o311ai_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o311ai_2 A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 VPWR B1 Y VPB pshort w=1.12e+06u l=180000u
@@ -42,4 +57,3 @@
 M1019 Y A3 a_310_368# VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o311ai/sky130_fd_sc_ms__o311ai_4.spice b/cells/o311ai/sky130_fd_sc_ms__o311ai_4.spice
index c36c274..5610795 100644
--- a/cells/o311ai/sky130_fd_sc_ms__o311ai_4.spice
+++ b/cells/o311ai/sky130_fd_sc_ms__o311ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o311ai_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o311ai_4 A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 Y A3 a_841_368# VPB pshort w=1.12e+06u l=180000u
@@ -74,4 +89,3 @@
 M1035 a_459_74# A3 VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o31a/sky130_fd_sc_ms__o31a_1.spice b/cells/o31a/sky130_fd_sc_ms__o31a_1.spice
index e619014..a4a8ed3 100644
--- a/cells/o31a/sky130_fd_sc_ms__o31a_1.spice
+++ b/cells/o31a/sky130_fd_sc_ms__o31a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o31a_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o31a_1 A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 a_230_94# A3 VGND VNB nlowvt w=640000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_343_368# A2 a_259_368# VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o31a/sky130_fd_sc_ms__o31a_2.spice b/cells/o31a/sky130_fd_sc_ms__o31a_2.spice
index 342270a..416009e 100644
--- a/cells/o31a/sky130_fd_sc_ms__o31a_2.spice
+++ b/cells/o31a/sky130_fd_sc_ms__o31a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o31a_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o31a_2 A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 a_55_264# A3 a_433_392# VPB pshort w=1e+06u l=180000u
@@ -26,4 +41,3 @@
 M1011 VPWR a_55_264# X VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o31a/sky130_fd_sc_ms__o31a_4.spice b/cells/o31a/sky130_fd_sc_ms__o31a_4.spice
index af2a980..bea5684 100644
--- a/cells/o31a/sky130_fd_sc_ms__o31a_4.spice
+++ b/cells/o31a/sky130_fd_sc_ms__o31a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o31a_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o31a_4 A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 VPWR A1 a_971_392# VPB pshort w=1e+06u l=180000u
@@ -50,4 +65,3 @@
 M1023 a_86_260# B1 a_492_125# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o31ai/sky130_fd_sc_ms__o31ai_1.spice b/cells/o31ai/sky130_fd_sc_ms__o31ai_1.spice
index 955afc7..809ad8b 100644
--- a/cells/o31ai/sky130_fd_sc_ms__o31ai_1.spice
+++ b/cells/o31ai/sky130_fd_sc_ms__o31ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o31ai_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o31ai_1 A1 A2 A3 B1 VGND VNB VPB VPWR Y
 M1000 a_206_368# A2 a_122_368# VPB pshort w=1.12e+06u l=180000u
@@ -18,4 +33,3 @@
 M1007 Y A3 a_206_368# VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o31ai/sky130_fd_sc_ms__o31ai_2.spice b/cells/o31ai/sky130_fd_sc_ms__o31ai_2.spice
index 4bb7fff..1725af4 100644
--- a/cells/o31ai/sky130_fd_sc_ms__o31ai_2.spice
+++ b/cells/o31ai/sky130_fd_sc_ms__o31ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o31ai_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o31ai_2 A1 A2 A3 B1 VGND VNB VPB VPWR Y
 M1000 VPWR A1 a_28_368# VPB pshort w=1.12e+06u l=180000u
@@ -34,4 +49,3 @@
 M1015 a_27_74# A1 VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o31ai/sky130_fd_sc_ms__o31ai_4.spice b/cells/o31ai/sky130_fd_sc_ms__o31ai_4.spice
index c88de92..a116fa8 100644
--- a/cells/o31ai/sky130_fd_sc_ms__o31ai_4.spice
+++ b/cells/o31ai/sky130_fd_sc_ms__o31ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o31ai_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o31ai_4 A1 A2 A3 B1 VGND VNB VPB VPWR Y
 M1000 VGND A1 a_27_82# VNB nlowvt w=740000u l=150000u
@@ -62,4 +77,3 @@
 M1029 VPWR B1 Y VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o32a/sky130_fd_sc_ms__o32a_1.spice b/cells/o32a/sky130_fd_sc_ms__o32a_1.spice
index 0271776..3e5b8cc 100644
--- a/cells/o32a/sky130_fd_sc_ms__o32a_1.spice
+++ b/cells/o32a/sky130_fd_sc_ms__o32a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o32a_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o32a_1 A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 a_251_74# B1 a_83_264# VNB nlowvt w=640000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_83_264# A3 a_335_368# VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o32a/sky130_fd_sc_ms__o32a_2.spice b/cells/o32a/sky130_fd_sc_ms__o32a_2.spice
index c74ba36..3fce910 100644
--- a/cells/o32a/sky130_fd_sc_ms__o32a_2.spice
+++ b/cells/o32a/sky130_fd_sc_ms__o32a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o32a_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o32a_2 A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 a_433_368# A2 a_349_368# VPB pshort w=1e+06u l=180000u
@@ -30,4 +45,3 @@
 M1013 VGND a_83_264# X VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o32a/sky130_fd_sc_ms__o32a_4.spice b/cells/o32a/sky130_fd_sc_ms__o32a_4.spice
index 442cab6..bed2885 100644
--- a/cells/o32a/sky130_fd_sc_ms__o32a_4.spice
+++ b/cells/o32a/sky130_fd_sc_ms__o32a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o32a_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o32a_4 A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 a_961_392# A3 a_83_256# VPB pshort w=1e+06u l=180000u
@@ -58,4 +73,3 @@
 M1027 VGND a_83_256# X VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o32ai/sky130_fd_sc_ms__o32ai_1.spice b/cells/o32ai/sky130_fd_sc_ms__o32ai_1.spice
index 5316b1f..bcf0d5a 100644
--- a/cells/o32ai/sky130_fd_sc_ms__o32ai_1.spice
+++ b/cells/o32ai/sky130_fd_sc_ms__o32ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o32ai_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o32ai_1 A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 VGND A3 a_27_74# VNB nlowvt w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 Y B1 a_27_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o32ai/sky130_fd_sc_ms__o32ai_2.spice b/cells/o32ai/sky130_fd_sc_ms__o32ai_2.spice
index 247391c..db348cc 100644
--- a/cells/o32ai/sky130_fd_sc_ms__o32ai_2.spice
+++ b/cells/o32ai/sky130_fd_sc_ms__o32ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o32ai_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o32ai_2 A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_771_368# A2 a_499_368# VPB pshort w=1.12e+06u l=180000u
@@ -42,4 +57,3 @@
 M1019 a_499_368# A3 Y VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o32ai/sky130_fd_sc_ms__o32ai_4.spice b/cells/o32ai/sky130_fd_sc_ms__o32ai_4.spice
index 7a9e474..7e758a4 100644
--- a/cells/o32ai/sky130_fd_sc_ms__o32ai_4.spice
+++ b/cells/o32ai/sky130_fd_sc_ms__o32ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o32ai_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o32ai_4 A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_27_74# B1 Y VNB nlowvt w=740000u l=150000u
@@ -82,4 +97,3 @@
 M1039 a_27_74# A1 VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o41a/sky130_fd_sc_ms__o41a_1.spice b/cells/o41a/sky130_fd_sc_ms__o41a_1.spice
index 5168b9f..d638342 100644
--- a/cells/o41a/sky130_fd_sc_ms__o41a_1.spice
+++ b/cells/o41a/sky130_fd_sc_ms__o41a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o41a_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o41a_1 A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 VPWR a_83_270# X VPB pshort w=1.12e+06u l=180000u
@@ -26,4 +41,3 @@
 M1011 a_326_74# A3 VGND VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o41a/sky130_fd_sc_ms__o41a_2.spice b/cells/o41a/sky130_fd_sc_ms__o41a_2.spice
index 10927f6..fbdd855 100644
--- a/cells/o41a/sky130_fd_sc_ms__o41a_2.spice
+++ b/cells/o41a/sky130_fd_sc_ms__o41a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o41a_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o41a_2 A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 a_27_74# A4 VGND VNB nlowvt w=740000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_27_74# A2 VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o41a/sky130_fd_sc_ms__o41a_4.spice b/cells/o41a/sky130_fd_sc_ms__o41a_4.spice
index 766c475..d3e984c 100644
--- a/cells/o41a/sky130_fd_sc_ms__o41a_4.spice
+++ b/cells/o41a/sky130_fd_sc_ms__o41a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o41a_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o41a_4 A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 a_523_124# A4 VGND VNB nlowvt w=640000u l=150000u
@@ -58,4 +73,3 @@
 M1027 VGND A4 a_523_124# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o41ai/sky130_fd_sc_ms__o41ai_1.spice b/cells/o41ai/sky130_fd_sc_ms__o41ai_1.spice
index 43cd9b7..88c027e 100644
--- a/cells/o41ai/sky130_fd_sc_ms__o41ai_1.spice
+++ b/cells/o41ai/sky130_fd_sc_ms__o41ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o41ai_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o41ai_1 A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 a_157_74# A1 VGND VNB nlowvt w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_157_74# B1 Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=2.109e+11p ps=2.05e+06u
 .ends
-
diff --git a/cells/o41ai/sky130_fd_sc_ms__o41ai_2.spice b/cells/o41ai/sky130_fd_sc_ms__o41ai_2.spice
index 27f707b..6cf5ae2 100644
--- a/cells/o41ai/sky130_fd_sc_ms__o41ai_2.spice
+++ b/cells/o41ai/sky130_fd_sc_ms__o41ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o41ai_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o41ai_2 A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 a_314_368# A3 a_610_368# VPB pshort w=1.12e+06u l=180000u
@@ -42,4 +57,3 @@
 M1019 a_610_368# A3 a_314_368# VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o41ai/sky130_fd_sc_ms__o41ai_4.spice b/cells/o41ai/sky130_fd_sc_ms__o41ai_4.spice
index c4efb7d..f8852b6 100644
--- a/cells/o41ai/sky130_fd_sc_ms__o41ai_4.spice
+++ b/cells/o41ai/sky130_fd_sc_ms__o41ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__o41ai_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__o41ai_4 A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 VGND A4 a_27_74# VNB nlowvt w=740000u l=150000u
@@ -78,4 +93,3 @@
 M1037 VGND A3 a_27_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or2/sky130_fd_sc_ms__or2_1.spice b/cells/or2/sky130_fd_sc_ms__or2_1.spice
index 0dff9c0..d98fdc6 100644
--- a/cells/or2/sky130_fd_sc_ms__or2_1.spice
+++ b/cells/or2/sky130_fd_sc_ms__or2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__or2_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__or2_1 A B VGND VNB VPB VPWR X
 M1000 X a_63_368# VGND VNB nlowvt w=740000u l=150000u
@@ -14,4 +29,3 @@
 M1005 VPWR A a_155_368# VPB pshort w=840000u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or2/sky130_fd_sc_ms__or2_2.spice b/cells/or2/sky130_fd_sc_ms__or2_2.spice
index 6db4bf9..9a3c7ce 100644
--- a/cells/or2/sky130_fd_sc_ms__or2_2.spice
+++ b/cells/or2/sky130_fd_sc_ms__or2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__or2_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__or2_2 A B VGND VNB VPB VPWR X
 M1000 VPWR A a_117_368# VPB pshort w=1e+06u l=180000u
@@ -18,4 +33,3 @@
 M1007 VPWR a_27_368# X VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or2/sky130_fd_sc_ms__or2_4.spice b/cells/or2/sky130_fd_sc_ms__or2_4.spice
index 25ad5cf..a764c33 100644
--- a/cells/or2/sky130_fd_sc_ms__or2_4.spice
+++ b/cells/or2/sky130_fd_sc_ms__or2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__or2_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__or2_4 A B VGND VNB VPB VPWR X
 M1000 VGND B a_83_260# VNB nlowvt w=740000u l=150000u
@@ -30,4 +45,3 @@
 M1013 VGND a_83_260# X VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or2b/sky130_fd_sc_ms__or2b_1.spice b/cells/or2b/sky130_fd_sc_ms__or2b_1.spice
index 9d0cf77..24961a8 100644
--- a/cells/or2b/sky130_fd_sc_ms__or2b_1.spice
+++ b/cells/or2b/sky130_fd_sc_ms__or2b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__or2b_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__or2b_1 A B_N VGND VNB VPB VPWR X
 M1000 a_264_368# a_27_112# VGND VNB nlowvt w=550000u l=150000u
@@ -18,4 +33,3 @@
 M1007 X a_264_368# VGND VNB nlowvt w=740000u l=150000u
 +  ad=2.109e+11p pd=2.05e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/or2b/sky130_fd_sc_ms__or2b_2.spice b/cells/or2b/sky130_fd_sc_ms__or2b_2.spice
index e0ac93e..2a2adc8 100644
--- a/cells/or2b/sky130_fd_sc_ms__or2b_2.spice
+++ b/cells/or2b/sky130_fd_sc_ms__or2b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__or2b_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__or2b_2 A B_N VGND VNB VPB VPWR X
 M1000 a_187_48# a_27_368# a_473_368# VPB pshort w=1e+06u l=180000u
@@ -22,4 +37,3 @@
 M1009 X a_187_48# VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or2b/sky130_fd_sc_ms__or2b_4.spice b/cells/or2b/sky130_fd_sc_ms__or2b_4.spice
index ef56919..85892a2 100644
--- a/cells/or2b/sky130_fd_sc_ms__or2b_4.spice
+++ b/cells/or2b/sky130_fd_sc_ms__or2b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__or2b_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__or2b_4 A B_N VGND VNB VPB VPWR X
 M1000 a_81_296# A VGND VNB nlowvt w=640000u l=150000u
@@ -38,4 +53,3 @@
 M1017 VGND a_676_48# a_81_296# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or3/sky130_fd_sc_ms__or3_1.spice b/cells/or3/sky130_fd_sc_ms__or3_1.spice
index c00ef13..c41ebd1 100644
--- a/cells/or3/sky130_fd_sc_ms__or3_1.spice
+++ b/cells/or3/sky130_fd_sc_ms__or3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__or3_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__or3_1 A B C VGND VNB VPB VPWR X
 M1000 a_119_368# C a_27_74# VPB pshort w=1e+06u l=180000u
@@ -18,4 +33,3 @@
 M1007 VGND C a_27_74# VNB nlowvt w=550000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or3/sky130_fd_sc_ms__or3_2.spice b/cells/or3/sky130_fd_sc_ms__or3_2.spice
index 3da024f..b771ef3 100644
--- a/cells/or3/sky130_fd_sc_ms__or3_2.spice
+++ b/cells/or3/sky130_fd_sc_ms__or3_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__or3_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__or3_2 A B C VGND VNB VPB VPWR X
 M1000 VGND a_27_74# X VNB nlowvt w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND C a_27_74# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or3/sky130_fd_sc_ms__or3_4.spice b/cells/or3/sky130_fd_sc_ms__or3_4.spice
index c92a5fe..852583c 100644
--- a/cells/or3/sky130_fd_sc_ms__or3_4.spice
+++ b/cells/or3/sky130_fd_sc_ms__or3_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__or3_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__or3_4 A B C VGND VNB VPB VPWR X
 M1000 X a_305_388# VGND VNB nlowvt w=740000u l=150000u
@@ -36,4 +51,3 @@
 M1016 X a_305_388# VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or3b/sky130_fd_sc_ms__or3b_1.spice b/cells/or3b/sky130_fd_sc_ms__or3b_1.spice
index 5996857..9a99b74 100644
--- a/cells/or3b/sky130_fd_sc_ms__or3b_1.spice
+++ b/cells/or3b/sky130_fd_sc_ms__or3b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__or3b_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__or3b_1 A B C_N VGND VNB VPB VPWR X
 M1000 a_239_74# B VGND VNB nlowvt w=550000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_371_391# a_127_74# a_239_74# VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=2.8e+11p ps=2.56e+06u
 .ends
-
diff --git a/cells/or3b/sky130_fd_sc_ms__or3b_2.spice b/cells/or3b/sky130_fd_sc_ms__or3b_2.spice
index f0ccc6c..b635b49 100644
--- a/cells/or3b/sky130_fd_sc_ms__or3b_2.spice
+++ b/cells/or3b/sky130_fd_sc_ms__or3b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__or3b_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__or3b_2 A B C_N VGND VNB VPB VPWR X
 M1000 a_190_260# a_27_368# VGND VNB nlowvt w=640000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VPWR a_190_260# X VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or3b/sky130_fd_sc_ms__or3b_4.spice b/cells/or3b/sky130_fd_sc_ms__or3b_4.spice
index 3bfa2a4..98305eb 100644
--- a/cells/or3b/sky130_fd_sc_ms__or3b_4.spice
+++ b/cells/or3b/sky130_fd_sc_ms__or3b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__or3b_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__or3b_4 A B C_N VGND VNB VPB VPWR X
 M1000 VPWR A a_220_392# VPB pshort w=1e+06u l=180000u
@@ -40,4 +55,3 @@
 M1018 VGND a_412_392# X VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4/sky130_fd_sc_ms__or4_1.spice b/cells/or4/sky130_fd_sc_ms__or4_1.spice
index 5e4e411..f56c081 100644
--- a/cells/or4/sky130_fd_sc_ms__or4_1.spice
+++ b/cells/or4/sky130_fd_sc_ms__or4_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__or4_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__or4_1 A B C D VGND VNB VPB VPWR X
 M1000 X a_44_392# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -22,4 +37,3 @@
 M1009 VPWR A a_334_392# VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4/sky130_fd_sc_ms__or4_2.spice b/cells/or4/sky130_fd_sc_ms__or4_2.spice
index 7dabba4..b93eb94 100644
--- a/cells/or4/sky130_fd_sc_ms__or4_2.spice
+++ b/cells/or4/sky130_fd_sc_ms__or4_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__or4_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__or4_2 A B C D VGND VNB VPB VPWR X
 M1000 a_261_392# C a_177_392# VPB pshort w=1e+06u l=180000u
@@ -26,4 +41,3 @@
 M1011 VPWR A a_345_392# VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4/sky130_fd_sc_ms__or4_4.spice b/cells/or4/sky130_fd_sc_ms__or4_4.spice
index 68ef807..e206ecc 100644
--- a/cells/or4/sky130_fd_sc_ms__or4_4.spice
+++ b/cells/or4/sky130_fd_sc_ms__or4_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__or4_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__or4_4 A B C D VGND VNB VPB VPWR X
 M1000 a_83_264# D a_965_392# VPB pshort w=1e+06u l=180000u
@@ -42,4 +57,3 @@
 M1019 a_965_392# C a_499_392# VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4b/sky130_fd_sc_ms__or4b_1.spice b/cells/or4b/sky130_fd_sc_ms__or4b_1.spice
index c00c881..69b27ba 100644
--- a/cells/or4b/sky130_fd_sc_ms__or4b_1.spice
+++ b/cells/or4b/sky130_fd_sc_ms__or4b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__or4b_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__or4b_1 A B C D_N VGND VNB VPB VPWR X
 M1000 VGND C a_228_74# VNB nlowvt w=550000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VGND A a_228_74# VNB nlowvt w=550000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4b/sky130_fd_sc_ms__or4b_2.spice b/cells/or4b/sky130_fd_sc_ms__or4b_2.spice
index ee6341d..e64036b 100644
--- a/cells/or4b/sky130_fd_sc_ms__or4b_2.spice
+++ b/cells/or4b/sky130_fd_sc_ms__or4b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__or4b_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__or4b_2 A B C D_N VGND VNB VPB VPWR X
 M1000 a_455_392# A VPWR VPB pshort w=1e+06u l=180000u
@@ -30,4 +45,3 @@
 M1013 VGND a_190_48# X VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4b/sky130_fd_sc_ms__or4b_4.spice b/cells/or4b/sky130_fd_sc_ms__or4b_4.spice
index 1ae72c7..0c10694 100644
--- a/cells/or4b/sky130_fd_sc_ms__or4b_4.spice
+++ b/cells/or4b/sky130_fd_sc_ms__or4b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__or4b_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__or4b_4 A B C D_N VGND VNB VPB VPWR X
 M1000 VGND a_27_74# X VNB nlowvt w=740000u l=150000u
@@ -46,4 +61,3 @@
 M1021 a_27_74# A VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4bb/sky130_fd_sc_ms__or4bb_1.spice b/cells/or4bb/sky130_fd_sc_ms__or4bb_1.spice
index dad7730..26ab0df 100644
--- a/cells/or4bb/sky130_fd_sc_ms__or4bb_1.spice
+++ b/cells/or4bb/sky130_fd_sc_ms__or4bb_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__or4bb_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__or4bb_1 A B C_N D_N VGND VNB VPB VPWR X
 M1000 a_357_378# a_219_424# VGND VNB nlowvt w=550000u l=150000u
@@ -30,4 +45,3 @@
 M1013 VGND a_27_424# a_357_378# VNB nlowvt w=550000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4bb/sky130_fd_sc_ms__or4bb_2.spice b/cells/or4bb/sky130_fd_sc_ms__or4bb_2.spice
index 68e8b79..404b864 100644
--- a/cells/or4bb/sky130_fd_sc_ms__or4bb_2.spice
+++ b/cells/or4bb/sky130_fd_sc_ms__or4bb_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__or4bb_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__or4bb_2 A B C_N D_N VGND VNB VPB VPWR X
 M1000 VGND a_548_110# a_182_270# VNB nlowvt w=640000u l=150000u
@@ -34,4 +49,3 @@
 M1015 VPWR D_N a_27_424# VPB pshort w=840000u l=180000u
 +  ad=0p pd=0u as=2.268e+11p ps=2.22e+06u
 .ends
-
diff --git a/cells/or4bb/sky130_fd_sc_ms__or4bb_4.spice b/cells/or4bb/sky130_fd_sc_ms__or4bb_4.spice
index afbf44b..6d8c5eb 100644
--- a/cells/or4bb/sky130_fd_sc_ms__or4bb_4.spice
+++ b/cells/or4bb/sky130_fd_sc_ms__or4bb_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__or4bb_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__or4bb_4 A B C_N D_N VGND VNB VPB VPWR X
 M1000 a_1273_392# B a_1063_392# VPB pshort w=1e+06u l=180000u
@@ -50,4 +65,3 @@
 M1023 a_1063_392# B a_1273_392# VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfbbn/sky130_fd_sc_ms__sdfbbn_1.spice b/cells/sdfbbn/sky130_fd_sc_ms__sdfbbn_1.spice
index 0faf334..17d480e 100644
--- a/cells/sdfbbn/sky130_fd_sc_ms__sdfbbn_1.spice
+++ b/cells/sdfbbn/sky130_fd_sc_ms__sdfbbn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__sdfbbn_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__sdfbbn_1 CLK_N D RESET_B SCD SCE SET_B VGND VNB VPB VPWR
 + Q Q_N
@@ -99,4 +114,3 @@
 M1047 VPWR RESET_B a_1579_258# VPB pshort w=640000u l=180000u
 +  ad=0p pd=0u as=3.529e+11p ps=3.68e+06u
 .ends
-
diff --git a/cells/sdfbbn/sky130_fd_sc_ms__sdfbbn_2.spice b/cells/sdfbbn/sky130_fd_sc_ms__sdfbbn_2.spice
index 9d5f606..b3a7299 100644
--- a/cells/sdfbbn/sky130_fd_sc_ms__sdfbbn_2.spice
+++ b/cells/sdfbbn/sky130_fd_sc_ms__sdfbbn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__sdfbbn_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__sdfbbn_2 CLK_N D RESET_B SCD SCE SET_B VGND VNB VPB VPWR
 + Q Q_N
@@ -107,4 +122,3 @@
 M1051 VGND SET_B a_1473_73# VNB nlowvt w=550000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfbbp/sky130_fd_sc_ms__sdfbbp_1.spice b/cells/sdfbbp/sky130_fd_sc_ms__sdfbbp_1.spice
index 594d24e..8076c39 100644
--- a/cells/sdfbbp/sky130_fd_sc_ms__sdfbbp_1.spice
+++ b/cells/sdfbbp/sky130_fd_sc_ms__sdfbbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__sdfbbp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__sdfbbp_1 CLK D RESET_B SCD SCE SET_B VGND VNB VPB VPWR Q
 + Q_N
@@ -99,4 +114,3 @@
 M1047 VPWR RESET_B a_1625_93# VPB pshort w=640000u l=180000u
 +  ad=0p pd=0u as=1.696e+11p ps=1.81e+06u
 .ends
-
diff --git a/cells/sdfrbp/sky130_fd_sc_ms__sdfrbp_1.spice b/cells/sdfrbp/sky130_fd_sc_ms__sdfrbp_1.spice
index 2731188..fd345d4 100644
--- a/cells/sdfrbp/sky130_fd_sc_ms__sdfrbp_1.spice
+++ b/cells/sdfrbp/sky130_fd_sc_ms__sdfrbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__sdfrbp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__sdfrbp_1 CLK D RESET_B SCD SCE VGND VNB VPB VPWR Q Q_N
 M1000 Q a_2513_424# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -86,4 +101,3 @@
 M1041 a_1369_93# a_1235_119# VGND VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfrbp/sky130_fd_sc_ms__sdfrbp_2.spice b/cells/sdfrbp/sky130_fd_sc_ms__sdfrbp_2.spice
index 90f8e54..96a5460 100644
--- a/cells/sdfrbp/sky130_fd_sc_ms__sdfrbp_2.spice
+++ b/cells/sdfrbp/sky130_fd_sc_ms__sdfrbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__sdfrbp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__sdfrbp_2 CLK D RESET_B SCD SCE VGND VNB VPB VPWR Q Q_N
 M1000 a_1370_290# a_1223_119# VPWR VPB pshort w=1e+06u l=180000u
@@ -94,4 +109,3 @@
 M1045 VGND a_2006_373# a_2000_74# VNB nlowvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfrtn/sky130_fd_sc_ms__sdfrtn_1.spice b/cells/sdfrtn/sky130_fd_sc_ms__sdfrtn_1.spice
index dcc7012..0b67c6b 100644
--- a/cells/sdfrtn/sky130_fd_sc_ms__sdfrtn_1.spice
+++ b/cells/sdfrtn/sky130_fd_sc_ms__sdfrtn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__sdfrtn_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__sdfrtn_1 CLK_N D RESET_B SCD SCE VGND VNB VPB VPWR Q
 M1000 VPWR CLK_N a_859_347# VPB pshort w=1e+06u l=180000u
@@ -82,4 +97,3 @@
 M1039 a_1827_144# a_859_347# a_1417_294# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfrtp/sky130_fd_sc_ms__sdfrtp_1.spice b/cells/sdfrtp/sky130_fd_sc_ms__sdfrtp_1.spice
index 425b0e7..4bf9681 100644
--- a/cells/sdfrtp/sky130_fd_sc_ms__sdfrtp_1.spice
+++ b/cells/sdfrtp/sky130_fd_sc_ms__sdfrtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__sdfrtp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__sdfrtp_1 CLK D RESET_B SCD SCE VGND VNB VPB VPWR Q
 M1000 a_1234_119# a_1037_387# a_303_464# VPB pshort w=420000u l=180000u
@@ -82,4 +97,3 @@
 M1039 a_2402_424# a_1745_74# VPWR VPB pshort w=840000u l=180000u
 +  ad=2.352e+11p pd=2.24e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfrtp/sky130_fd_sc_ms__sdfrtp_2.spice b/cells/sdfrtp/sky130_fd_sc_ms__sdfrtp_2.spice
index 9a1010a..f759b27 100644
--- a/cells/sdfrtp/sky130_fd_sc_ms__sdfrtp_2.spice
+++ b/cells/sdfrtp/sky130_fd_sc_ms__sdfrtp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__sdfrtp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__sdfrtp_2 CLK D RESET_B SCD SCE VGND VNB VPB VPWR Q
 M1000 a_390_81# D a_343_483# VPB pshort w=640000u l=180000u
@@ -86,4 +101,3 @@
 M1041 Q a_2495_392# VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfrtp/sky130_fd_sc_ms__sdfrtp_4.spice b/cells/sdfrtp/sky130_fd_sc_ms__sdfrtp_4.spice
index 05f5a18..8b223a2 100644
--- a/cells/sdfrtp/sky130_fd_sc_ms__sdfrtp_4.spice
+++ b/cells/sdfrtp/sky130_fd_sc_ms__sdfrtp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__sdfrtp_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__sdfrtp_4 CLK D RESET_B SCD SCE VGND VNB VPB VPWR Q
 M1000 a_1397_138# a_1367_112# a_1319_138# VNB nlowvt w=420000u l=150000u
@@ -96,4 +111,3 @@
 M1046 a_2339_74# a_1745_74# VPWR VPB pshort w=840000u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfsbp/sky130_fd_sc_ms__sdfsbp_1.spice b/cells/sdfsbp/sky130_fd_sc_ms__sdfsbp_1.spice
index c888f07..aab109d 100644
--- a/cells/sdfsbp/sky130_fd_sc_ms__sdfsbp_1.spice
+++ b/cells/sdfsbp/sky130_fd_sc_ms__sdfsbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__sdfsbp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__sdfsbp_1 CLK D SCD SCE SET_B VGND VNB VPB VPWR Q Q_N
 M1000 Q_N a_1762_74# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -86,4 +101,3 @@
 M1041 a_1603_347# a_995_74# VPWR VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfsbp/sky130_fd_sc_ms__sdfsbp_2.spice b/cells/sdfsbp/sky130_fd_sc_ms__sdfsbp_2.spice
index fbaab97..5108a3f 100644
--- a/cells/sdfsbp/sky130_fd_sc_ms__sdfsbp_2.spice
+++ b/cells/sdfsbp/sky130_fd_sc_ms__sdfsbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__sdfsbp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__sdfsbp_2 CLK D SCD SCE SET_B VGND VNB VPB VPWR Q Q_N
 M1000 VPWR a_2067_74# a_3177_368# VPB pshort w=1e+06u l=180000u
@@ -102,4 +117,3 @@
 M1049 VPWR a_3177_368# Q VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfstp/sky130_fd_sc_ms__sdfstp_1.spice b/cells/sdfstp/sky130_fd_sc_ms__sdfstp_1.spice
index fd49faa..4280a05 100644
--- a/cells/sdfstp/sky130_fd_sc_ms__sdfstp_1.spice
+++ b/cells/sdfstp/sky130_fd_sc_ms__sdfstp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__sdfstp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__sdfstp_1 CLK D SCD SCE SET_B VGND VNB VPB VPWR Q
 M1000 a_1686_74# a_998_81# VGND VNB nlowvt w=640000u l=150000u
@@ -82,4 +97,3 @@
 M1039 a_1958_48# a_1764_74# VGND VNB nlowvt w=420000u l=150000u
 +  ad=1.197e+11p pd=1.41e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfstp/sky130_fd_sc_ms__sdfstp_2.spice b/cells/sdfstp/sky130_fd_sc_ms__sdfstp_2.spice
index f72ed9c..a08cc37 100644
--- a/cells/sdfstp/sky130_fd_sc_ms__sdfstp_2.spice
+++ b/cells/sdfstp/sky130_fd_sc_ms__sdfstp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__sdfstp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__sdfstp_2 CLK D SCD SCE SET_B VGND VNB VPB VPWR Q
 M1000 a_1587_379# a_991_81# VPWR VPB pshort w=840000u l=180000u
@@ -94,4 +109,3 @@
 M1045 Q a_2611_98# VPWR VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfstp/sky130_fd_sc_ms__sdfstp_4.spice b/cells/sdfstp/sky130_fd_sc_ms__sdfstp_4.spice
index dd94fcb..52e1c56 100644
--- a/cells/sdfstp/sky130_fd_sc_ms__sdfstp_4.spice
+++ b/cells/sdfstp/sky130_fd_sc_ms__sdfstp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__sdfstp_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__sdfstp_4 CLK D SCD SCE SET_B VGND VNB VPB VPWR Q
 M1000 Q a_2580_74# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -104,4 +119,3 @@
 M1050 VPWR a_2580_74# Q VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfxbp/sky130_fd_sc_ms__sdfxbp_1.spice b/cells/sdfxbp/sky130_fd_sc_ms__sdfxbp_1.spice
index 3fe2bfa..77f331c 100644
--- a/cells/sdfxbp/sky130_fd_sc_ms__sdfxbp_1.spice
+++ b/cells/sdfxbp/sky130_fd_sc_ms__sdfxbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__sdfxbp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__sdfxbp_1 CLK D SCD SCE VGND VNB VPB VPWR Q Q_N
 M1000 a_1529_74# a_612_74# a_1243_398# VPB pshort w=840000u l=180000u
@@ -74,4 +89,3 @@
 M1035 VGND a_1723_48# a_2216_112# VNB nlowvt w=550000u l=150000u
 +  ad=0p pd=0u as=1.5675e+11p ps=1.67e+06u
 .ends
-
diff --git a/cells/sdfxbp/sky130_fd_sc_ms__sdfxbp_2.spice b/cells/sdfxbp/sky130_fd_sc_ms__sdfxbp_2.spice
index c9dbd5b..68893ea 100644
--- a/cells/sdfxbp/sky130_fd_sc_ms__sdfxbp_2.spice
+++ b/cells/sdfxbp/sky130_fd_sc_ms__sdfxbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__sdfxbp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__sdfxbp_2 CLK D SCD SCE VGND VNB VPB VPWR Q Q_N
 M1000 VGND a_1711_48# Q VNB nlowvt w=740000u l=150000u
@@ -82,4 +97,3 @@
 M1039 a_1511_74# a_828_74# a_1243_48# VNB nlowvt w=550000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfxtp/sky130_fd_sc_ms__sdfxtp_1.spice b/cells/sdfxtp/sky130_fd_sc_ms__sdfxtp_1.spice
index b768504..49fe6e8 100644
--- a/cells/sdfxtp/sky130_fd_sc_ms__sdfxtp_1.spice
+++ b/cells/sdfxtp/sky130_fd_sc_ms__sdfxtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__sdfxtp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__sdfxtp_1 CLK D SCD SCE VGND VNB VPB VPWR Q
 M1000 a_1520_74# a_828_74# a_1239_74# VNB nlowvt w=550000u l=150000u
@@ -66,4 +81,3 @@
 M1031 a_1736_74# a_1520_74# VPWR VPB pshort w=840000u l=180000u
 +  ad=2.352e+11p pd=2.24e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfxtp/sky130_fd_sc_ms__sdfxtp_2.spice b/cells/sdfxtp/sky130_fd_sc_ms__sdfxtp_2.spice
index d527414..2c596de 100644
--- a/cells/sdfxtp/sky130_fd_sc_ms__sdfxtp_2.spice
+++ b/cells/sdfxtp/sky130_fd_sc_ms__sdfxtp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__sdfxtp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__sdfxtp_2 CLK D SCD SCE VGND VNB VPB VPWR Q
 M1000 a_1707_496# a_846_74# a_1595_424# VPB pshort w=420000u l=180000u
@@ -70,4 +85,3 @@
 M1033 VGND SCE a_27_74# VNB nlowvt w=420000u l=150000u
 +  ad=0p pd=0u as=1.386e+11p ps=1.5e+06u
 .ends
-
diff --git a/cells/sdfxtp/sky130_fd_sc_ms__sdfxtp_4.spice b/cells/sdfxtp/sky130_fd_sc_ms__sdfxtp_4.spice
index 12222cd..6522104 100644
--- a/cells/sdfxtp/sky130_fd_sc_ms__sdfxtp_4.spice
+++ b/cells/sdfxtp/sky130_fd_sc_ms__sdfxtp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__sdfxtp_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__sdfxtp_4 CLK D SCD SCE VGND VNB VPB VPWR Q
 M1000 VPWR SCD a_415_464# VPB pshort w=640000u l=180000u
@@ -80,4 +95,3 @@
 M1038 a_1767_476# a_828_74# a_1587_74# VPB pshort w=420000u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdlclkp/sky130_fd_sc_ms__sdlclkp_1.spice b/cells/sdlclkp/sky130_fd_sc_ms__sdlclkp_1.spice
index ccee20c..8234096 100644
--- a/cells/sdlclkp/sky130_fd_sc_ms__sdlclkp_1.spice
+++ b/cells/sdlclkp/sky130_fd_sc_ms__sdlclkp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__sdlclkp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__sdlclkp_1 CLK GATE SCE VGND VNB VPB VPWR GCLK
 M1000 a_114_112# GATE a_119_424# VPB pshort w=840000u l=180000u
@@ -46,4 +61,3 @@
 M1021 a_318_74# a_288_48# VPWR VPB pshort w=840000u l=180000u
 +  ad=2.352e+11p pd=2.24e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/sdlclkp/sky130_fd_sc_ms__sdlclkp_2.spice b/cells/sdlclkp/sky130_fd_sc_ms__sdlclkp_2.spice
index bd48a1c..d42a4f6 100644
--- a/cells/sdlclkp/sky130_fd_sc_ms__sdlclkp_2.spice
+++ b/cells/sdlclkp/sky130_fd_sc_ms__sdlclkp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__sdlclkp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__sdlclkp_2 CLK GATE SCE VGND VNB VPB VPWR GCLK
 M1000 a_706_317# a_580_74# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -50,4 +65,3 @@
 M1023 a_580_74# a_288_48# a_114_112# VNB nlowvt w=550000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdlclkp/sky130_fd_sc_ms__sdlclkp_4.spice b/cells/sdlclkp/sky130_fd_sc_ms__sdlclkp_4.spice
index 69050a2..6f6e740 100644
--- a/cells/sdlclkp/sky130_fd_sc_ms__sdlclkp_4.spice
+++ b/cells/sdlclkp/sky130_fd_sc_ms__sdlclkp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__sdlclkp_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__sdlclkp_4 CLK GATE SCE VGND VNB VPB VPWR GCLK
 M1000 VGND a_1292_368# GCLK VNB nlowvt w=740000u l=150000u
@@ -58,4 +73,3 @@
 M1027 GCLK a_1292_368# VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sedfxbp/sky130_fd_sc_ms__sedfxbp_1.spice b/cells/sedfxbp/sky130_fd_sc_ms__sedfxbp_1.spice
index 7f894c6..bd229ec 100644
--- a/cells/sedfxbp/sky130_fd_sc_ms__sedfxbp_1.spice
+++ b/cells/sedfxbp/sky130_fd_sc_ms__sedfxbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__sedfxbp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__sedfxbp_1 CLK D DE SCD SCE VGND VNB VPB VPWR Q Q_N
 M1000 a_1549_74# a_1351_74# VPWR VPB pshort w=1.12e+06u l=180000u
@@ -90,4 +105,3 @@
 M1043 a_2348_392# a_1972_92# VPWR VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sedfxbp/sky130_fd_sc_ms__sedfxbp_2.spice b/cells/sedfxbp/sky130_fd_sc_ms__sedfxbp_2.spice
index ee8e202..eb4037f 100644
--- a/cells/sedfxbp/sky130_fd_sc_ms__sedfxbp_2.spice
+++ b/cells/sedfxbp/sky130_fd_sc_ms__sedfxbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__sedfxbp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__sedfxbp_2 CLK D DE SCD SCE VGND VNB VPB VPWR Q Q_N
 M1000 a_1377_368# CLK VPWR VPB pshort w=1.12e+06u l=180000u
@@ -98,4 +113,3 @@
 M1047 VGND a_2489_74# Q VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sedfxtp/sky130_fd_sc_ms__sedfxtp_1.spice b/cells/sedfxtp/sky130_fd_sc_ms__sedfxtp_1.spice
index 3737cfe..271c535 100644
--- a/cells/sedfxtp/sky130_fd_sc_ms__sedfxtp_1.spice
+++ b/cells/sedfxtp/sky130_fd_sc_ms__sedfxtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__sedfxtp_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__sedfxtp_1 CLK D DE SCD SCE VGND VNB VPB VPWR Q
 M1000 VPWR a_2385_74# Q VPB pshort w=1.12e+06u l=180000u
@@ -86,4 +101,3 @@
 M1041 a_2277_392# a_1910_71# VPWR VPB pshort w=1e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sedfxtp/sky130_fd_sc_ms__sedfxtp_2.spice b/cells/sedfxtp/sky130_fd_sc_ms__sedfxtp_2.spice
index 4e328ce..f547df4 100644
--- a/cells/sedfxtp/sky130_fd_sc_ms__sedfxtp_2.spice
+++ b/cells/sedfxtp/sky130_fd_sc_ms__sedfxtp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__sedfxtp_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__sedfxtp_2 CLK D DE SCD SCE VGND VNB VPB VPWR Q
 M1000 a_2660_508# a_1538_74# a_2474_74# VPB pshort w=420000u l=180000u
@@ -90,4 +105,3 @@
 M1043 a_2402_74# a_1979_71# VGND VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sedfxtp/sky130_fd_sc_ms__sedfxtp_4.spice b/cells/sedfxtp/sky130_fd_sc_ms__sedfxtp_4.spice
index 93b36fb..4643f9e 100644
--- a/cells/sedfxtp/sky130_fd_sc_ms__sedfxtp_4.spice
+++ b/cells/sedfxtp/sky130_fd_sc_ms__sedfxtp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__sedfxtp_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__sedfxtp_4 CLK D DE SCD SCE VGND VNB VPB VPWR Q
 M1000 a_2589_508# a_1510_74# a_2403_74# VPB pshort w=420000u l=180000u
@@ -98,4 +113,3 @@
 M1047 a_2331_74# a_1943_53# VGND VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/tap/sky130_fd_sc_ms__tap_1.spice b/cells/tap/sky130_fd_sc_ms__tap_1.spice
index 0426adb..a43250d 100644
--- a/cells/tap/sky130_fd_sc_ms__tap_1.spice
+++ b/cells/tap/sky130_fd_sc_ms__tap_1.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__tap_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__tap_1 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/tap/sky130_fd_sc_ms__tap_2.spice b/cells/tap/sky130_fd_sc_ms__tap_2.spice
index 659a996..92dd0de 100644
--- a/cells/tap/sky130_fd_sc_ms__tap_2.spice
+++ b/cells/tap/sky130_fd_sc_ms__tap_2.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__tap_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__tap_2 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/tapmet1/sky130_fd_sc_ms__tapmet1_2.spice b/cells/tapmet1/sky130_fd_sc_ms__tapmet1_2.spice
index db82f05..b37f235 100644
--- a/cells/tapmet1/sky130_fd_sc_ms__tapmet1_2.spice
+++ b/cells/tapmet1/sky130_fd_sc_ms__tapmet1_2.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__tapmet1_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__tapmet1_2 VGND VPB VPWR
 .ends
-
diff --git a/cells/tapvgnd/sky130_fd_sc_ms__tapvgnd_1.spice b/cells/tapvgnd/sky130_fd_sc_ms__tapvgnd_1.spice
index 6dae547..091f729 100644
--- a/cells/tapvgnd/sky130_fd_sc_ms__tapvgnd_1.spice
+++ b/cells/tapvgnd/sky130_fd_sc_ms__tapvgnd_1.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__tapvgnd_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__tapvgnd_1 VGND VPB VPWR
 .ends
-
diff --git a/cells/tapvgnd2/sky130_fd_sc_ms__tapvgnd2_1.spice b/cells/tapvgnd2/sky130_fd_sc_ms__tapvgnd2_1.spice
index 22f71ba..55fb96a 100644
--- a/cells/tapvgnd2/sky130_fd_sc_ms__tapvgnd2_1.spice
+++ b/cells/tapvgnd2/sky130_fd_sc_ms__tapvgnd2_1.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__tapvgnd2_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__tapvgnd2_1 VGND VPB VPWR
 .ends
-
diff --git a/cells/tapvpwrvgnd/sky130_fd_sc_ms__tapvpwrvgnd_1.spice b/cells/tapvpwrvgnd/sky130_fd_sc_ms__tapvpwrvgnd_1.spice
index 6b8a7b4..410f999 100644
--- a/cells/tapvpwrvgnd/sky130_fd_sc_ms__tapvpwrvgnd_1.spice
+++ b/cells/tapvpwrvgnd/sky130_fd_sc_ms__tapvpwrvgnd_1.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__tapvpwrvgnd_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__tapvpwrvgnd_1 VGND VPWR
 .ends
-
diff --git a/cells/xnor2/sky130_fd_sc_ms__xnor2_1.spice b/cells/xnor2/sky130_fd_sc_ms__xnor2_1.spice
index 48d0452..5f6dad8 100644
--- a/cells/xnor2/sky130_fd_sc_ms__xnor2_1.spice
+++ b/cells/xnor2/sky130_fd_sc_ms__xnor2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__xnor2_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__xnor2_1 A B VGND VNB VPB VPWR Y
 M1000 VGND A a_293_74# VNB nlowvt w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR a_141_385# Y VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xnor2/sky130_fd_sc_ms__xnor2_2.spice b/cells/xnor2/sky130_fd_sc_ms__xnor2_2.spice
index 5d0dc11..5ecdca4 100644
--- a/cells/xnor2/sky130_fd_sc_ms__xnor2_2.spice
+++ b/cells/xnor2/sky130_fd_sc_ms__xnor2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__xnor2_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__xnor2_2 A B VGND VNB VPB VPWR Y
 M1000 Y B a_641_368# VPB pshort w=1.12e+06u l=180000u
@@ -34,4 +49,3 @@
 M1015 a_340_107# a_136_368# Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xnor2/sky130_fd_sc_ms__xnor2_4.spice b/cells/xnor2/sky130_fd_sc_ms__xnor2_4.spice
index 93ab4ee..aab0c17 100644
--- a/cells/xnor2/sky130_fd_sc_ms__xnor2_4.spice
+++ b/cells/xnor2/sky130_fd_sc_ms__xnor2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__xnor2_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__xnor2_4 A B VGND VNB VPB VPWR Y
 M1000 a_950_368# A VPWR VPB pshort w=1.12e+06u l=180000u
@@ -62,4 +77,3 @@
 M1029 Y a_119_368# a_511_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xnor3/sky130_fd_sc_ms__xnor3_1.spice b/cells/xnor3/sky130_fd_sc_ms__xnor3_1.spice
index f848b52..2b90ab6 100644
--- a/cells/xnor3/sky130_fd_sc_ms__xnor3_1.spice
+++ b/cells/xnor3/sky130_fd_sc_ms__xnor3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__xnor3_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__xnor3_1 A B C VGND VNB VPB VPWR X
 M1000 a_81_268# C a_363_394# VPB pshort w=840000u l=180000u
@@ -46,4 +61,3 @@
 M1021 a_363_394# a_786_100# a_1116_383# VNB nlowvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xnor3/sky130_fd_sc_ms__xnor3_2.spice b/cells/xnor3/sky130_fd_sc_ms__xnor3_2.spice
index 2a6e76b..063c648 100644
--- a/cells/xnor3/sky130_fd_sc_ms__xnor3_2.spice
+++ b/cells/xnor3/sky130_fd_sc_ms__xnor3_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__xnor3_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__xnor3_2 A B C VGND VNB VPB VPWR X
 M1000 a_335_373# B a_83_247# VPB pshort w=840000u l=180000u
@@ -50,4 +65,3 @@
 M1023 a_1057_74# a_1027_48# a_329_81# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xnor3/sky130_fd_sc_ms__xnor3_4.spice b/cells/xnor3/sky130_fd_sc_ms__xnor3_4.spice
index 945433e..3e69fa3 100644
--- a/cells/xnor3/sky130_fd_sc_ms__xnor3_4.spice
+++ b/cells/xnor3/sky130_fd_sc_ms__xnor3_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__xnor3_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__xnor3_4 A B C VGND VNB VPB VPWR X
 M1000 a_75_227# a_386_23# a_321_77# VPB pshort w=840000u l=180000u
@@ -58,4 +73,3 @@
 M1027 a_1057_74# a_1024_300# a_321_77# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xor2/sky130_fd_sc_ms__xor2_1.spice b/cells/xor2/sky130_fd_sc_ms__xor2_1.spice
index dc3c7d7..21fa27f 100644
--- a/cells/xor2/sky130_fd_sc_ms__xor2_1.spice
+++ b/cells/xor2/sky130_fd_sc_ms__xor2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__xor2_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__xor2_1 A B VGND VNB VPB VPWR X
 M1000 a_161_392# A VPWR VPB pshort w=1e+06u l=180000u
@@ -22,4 +37,3 @@
 M1009 VGND a_194_125# X VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xor2/sky130_fd_sc_ms__xor2_2.spice b/cells/xor2/sky130_fd_sc_ms__xor2_2.spice
index 85273bd..fa20b8e 100644
--- a/cells/xor2/sky130_fd_sc_ms__xor2_2.spice
+++ b/cells/xor2/sky130_fd_sc_ms__xor2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__xor2_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__xor2_2 A B VGND VNB VPB VPWR X
 M1000 a_313_368# a_183_74# X VPB pshort w=1.12e+06u l=180000u
@@ -32,4 +47,3 @@
 M1014 X a_183_74# a_313_368# VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xor2/sky130_fd_sc_ms__xor2_4.spice b/cells/xor2/sky130_fd_sc_ms__xor2_4.spice
index 6207c02..2d3d174 100644
--- a/cells/xor2/sky130_fd_sc_ms__xor2_4.spice
+++ b/cells/xor2/sky130_fd_sc_ms__xor2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__xor2_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__xor2_4 A B VGND VNB VPB VPWR X
 M1000 VPWR B a_514_368# VPB pshort w=1.12e+06u l=180000u
@@ -62,4 +77,3 @@
 M1029 X a_160_98# VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xor3/sky130_fd_sc_ms__xor3_1.spice b/cells/xor3/sky130_fd_sc_ms__xor3_1.spice
index 5f6151c..3be3da0 100644
--- a/cells/xor3/sky130_fd_sc_ms__xor3_1.spice
+++ b/cells/xor3/sky130_fd_sc_ms__xor3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__xor3_1.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__xor3_1 A B C VGND VNB VPB VPWR X
 M1000 a_84_108# A VGND VNB nlowvt w=640000u l=150000u
@@ -46,4 +61,3 @@
 M1021 VPWR B a_452_288# VPB pshort w=1.12e+06u l=180000u
 +  ad=0p pd=0u as=3.136e+11p ps=2.8e+06u
 .ends
-
diff --git a/cells/xor3/sky130_fd_sc_ms__xor3_2.spice b/cells/xor3/sky130_fd_sc_ms__xor3_2.spice
index 2d8a847..2707514 100644
--- a/cells/xor3/sky130_fd_sc_ms__xor3_2.spice
+++ b/cells/xor3/sky130_fd_sc_ms__xor3_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__xor3_2.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__xor3_2 A B C VGND VNB VPB VPWR X
 M1000 a_83_289# A VGND VNB nlowvt w=640000u l=150000u
@@ -50,4 +65,3 @@
 M1023 a_375_419# B a_83_289# VPB pshort w=840000u l=180000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xor3/sky130_fd_sc_ms__xor3_4.spice b/cells/xor3/sky130_fd_sc_ms__xor3_4.spice
index 137e191..bebf5f6 100644
--- a/cells/xor3/sky130_fd_sc_ms__xor3_4.spice
+++ b/cells/xor3/sky130_fd_sc_ms__xor3_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_ms__xor3_4.ext - technology: sky130A
+* Copyright 2020 The SkyWater PDK Authors
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* SPDX-License-Identifier: Apache-2.0
+
 
 .subckt sky130_fd_sc_ms__xor3_4 A B C VGND VNB VPB VPWR X
 M1000 VPWR C a_1155_284# VPB pshort w=640000u l=180000u
@@ -58,4 +73,3 @@
 M1027 a_74_294# a_397_320# a_326_392# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-