diff --git a/cells/a2111o/sky130_fd_sc_hs__a2111o_1.spice b/cells/a2111o/sky130_fd_sc_hs__a2111o_1.spice
index 69e90b6..35a5846 100644
--- a/cells/a2111o/sky130_fd_sc_hs__a2111o_1.spice
+++ b/cells/a2111o/sky130_fd_sc_hs__a2111o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a2111o_1 A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 a_431_392# C1 a_353_392# VPB pshort w=1e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 X a_85_136# VPWR VPB pshort w=1.12e+06u l=150000u
 +  ad=3.08e+11p pd=2.79e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/a2111o/sky130_fd_sc_hs__a2111o_2.spice b/cells/a2111o/sky130_fd_sc_hs__a2111o_2.spice
index 6517739..853b626 100644
--- a/cells/a2111o/sky130_fd_sc_hs__a2111o_2.spice
+++ b/cells/a2111o/sky130_fd_sc_hs__a2111o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a2111o_2 A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 a_522_368# C1 a_444_368# VPB pshort w=1.12e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_630_368# A1 VPWR VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2111o/sky130_fd_sc_hs__a2111o_4.spice b/cells/a2111o/sky130_fd_sc_hs__a2111o_4.spice
index eaeb628..f5f0e4f 100644
--- a/cells/a2111o/sky130_fd_sc_hs__a2111o_4.spice
+++ b/cells/a2111o/sky130_fd_sc_hs__a2111o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a2111o_4 A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 a_1013_392# B1 a_814_392# VPB pshort w=1e+06u l=150000u
@@ -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_hs__a2111oi_1.spice b/cells/a2111oi/sky130_fd_sc_hs__a2111oi_1.spice
index 533b4cd..d4c54b9 100644
--- a/cells/a2111oi/sky130_fd_sc_hs__a2111oi_1.spice
+++ b/cells/a2111oi/sky130_fd_sc_hs__a2111oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a2111oi_1 A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 a_156_368# D1 Y VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__a2111oi_2.spice b/cells/a2111oi/sky130_fd_sc_hs__a2111oi_2.spice
index 991abd0..a05ad94 100644
--- a/cells/a2111oi/sky130_fd_sc_hs__a2111oi_2.spice
+++ b/cells/a2111oi/sky130_fd_sc_hs__a2111oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a2111oi_2 A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 VPWR A1 a_533_368# VPB pshort w=1.12e+06u l=150000u
@@ -36,4 +51,3 @@
 M1016 a_533_368# B1 a_334_368# VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2111oi/sky130_fd_sc_hs__a2111oi_4.spice b/cells/a2111oi/sky130_fd_sc_hs__a2111oi_4.spice
index 023f7f7..0d97db9 100644
--- a/cells/a2111oi/sky130_fd_sc_hs__a2111oi_4.spice
+++ b/cells/a2111oi/sky130_fd_sc_hs__a2111oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a2111oi_4 A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 Y D1 a_29_368# VPB pshort w=1.12e+06u l=150000u
@@ -70,4 +85,3 @@
 M1033 a_853_368# A2 VPWR VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a211o/sky130_fd_sc_hs__a211o_1.spice b/cells/a211o/sky130_fd_sc_hs__a211o_1.spice
index 038e016..cd8fd31 100644
--- a/cells/a211o/sky130_fd_sc_hs__a211o_1.spice
+++ b/cells/a211o/sky130_fd_sc_hs__a211o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a211o_1 A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 VPWR a_81_264# X VPB pshort w=1.12e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_81_264# A1 a_366_136# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a211o/sky130_fd_sc_hs__a211o_2.spice b/cells/a211o/sky130_fd_sc_hs__a211o_2.spice
index 1209d25..ccc8634 100644
--- a/cells/a211o/sky130_fd_sc_hs__a211o_2.spice
+++ b/cells/a211o/sky130_fd_sc_hs__a211o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a211o_2 A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 a_85_270# A1 a_399_74# VNB nlowvt w=740000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_85_270# C1 a_600_392# VPB pshort w=1e+06u l=150000u
 +  ad=2.75e+11p pd=2.55e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/a211o/sky130_fd_sc_hs__a211o_4.spice b/cells/a211o/sky130_fd_sc_hs__a211o_4.spice
index b1286b0..044eff0 100644
--- a/cells/a211o/sky130_fd_sc_hs__a211o_4.spice
+++ b/cells/a211o/sky130_fd_sc_hs__a211o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a211o_4 A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 VPWR a_105_280# X VPB pshort w=1.12e+06u 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_hs__a211oi_1.spice b/cells/a211oi/sky130_fd_sc_hs__a211oi_1.spice
index dd677fc..900b7b3 100644
--- a/cells/a211oi/sky130_fd_sc_hs__a211oi_1.spice
+++ b/cells/a211oi/sky130_fd_sc_hs__a211oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a211oi_1 A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 VPWR A2 a_71_368# VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__a211oi_2.spice b/cells/a211oi/sky130_fd_sc_hs__a211oi_2.spice
index 96063af..3c804d7 100644
--- a/cells/a211oi/sky130_fd_sc_hs__a211oi_2.spice
+++ b/cells/a211oi/sky130_fd_sc_hs__a211oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a211oi_2 A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_114_368# A1 VPWR VPB pshort w=1.12e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_497_368# C1 Y VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a211oi/sky130_fd_sc_hs__a211oi_4.spice b/cells/a211oi/sky130_fd_sc_hs__a211oi_4.spice
index db2ee42..eb3a0dd 100644
--- a/cells/a211oi/sky130_fd_sc_hs__a211oi_4.spice
+++ b/cells/a211oi/sky130_fd_sc_hs__a211oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_901_368# B1 a_77_368# VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21bo/sky130_fd_sc_hs__a21bo_1.spice b/cells/a21bo/sky130_fd_sc_hs__a21bo_1.spice
index 7cde87c..676bdd2 100644
--- a/cells/a21bo/sky130_fd_sc_hs__a21bo_1.spice
+++ b/cells/a21bo/sky130_fd_sc_hs__a21bo_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a21bo_1 A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 a_122_136# A2 VGND VNB nlowvt w=640000u l=150000u
@@ -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_hs__a21bo_2.spice b/cells/a21bo/sky130_fd_sc_hs__a21bo_2.spice
index 9118c2e..07dcf76 100644
--- a/cells/a21bo/sky130_fd_sc_hs__a21bo_2.spice
+++ b/cells/a21bo/sky130_fd_sc_hs__a21bo_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 VPWR a_187_244# X VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21bo/sky130_fd_sc_hs__a21bo_4.spice b/cells/a21bo/sky130_fd_sc_hs__a21bo_4.spice
index a42c3ef..16e3cc1 100644
--- a/cells/a21bo/sky130_fd_sc_hs__a21bo_4.spice
+++ b/cells/a21bo/sky130_fd_sc_hs__a21bo_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a21bo_4 A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 VPWR A1 a_596_392# VPB pshort w=1e+06u l=150000u
@@ -46,4 +61,3 @@
 M1021 a_187_338# a_29_392# VGND VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21boi/sky130_fd_sc_hs__a21boi_1.spice b/cells/a21boi/sky130_fd_sc_hs__a21boi_1.spice
index 7c6fb61..66bca15 100644
--- a/cells/a21boi/sky130_fd_sc_hs__a21boi_1.spice
+++ b/cells/a21boi/sky130_fd_sc_hs__a21boi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 VGND A2 a_437_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21boi/sky130_fd_sc_hs__a21boi_2.spice b/cells/a21boi/sky130_fd_sc_hs__a21boi_2.spice
index 3e26109..1e390ed 100644
--- a/cells/a21boi/sky130_fd_sc_hs__a21boi_2.spice
+++ b/cells/a21boi/sky130_fd_sc_hs__a21boi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__a21boi_4.spice b/cells/a21boi/sky130_fd_sc_hs__a21boi_4.spice
index 1d33b23..e3c01ff 100644
--- a/cells/a21boi/sky130_fd_sc_hs__a21boi_4.spice
+++ b/cells/a21boi/sky130_fd_sc_hs__a21boi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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# A2 VPWR VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21o/sky130_fd_sc_hs__a21o_1.spice b/cells/a21o/sky130_fd_sc_hs__a21o_1.spice
index 763c55d..59eadfc 100644
--- a/cells/a21o/sky130_fd_sc_hs__a21o_1.spice
+++ b/cells/a21o/sky130_fd_sc_hs__a21o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a21o_1 A1 A2 B1 VGND VNB VPB VPWR X
 M1000 VPWR a_81_264# X VPB pshort w=1.12e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_452_136# A1 a_81_264# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21o/sky130_fd_sc_hs__a21o_2.spice b/cells/a21o/sky130_fd_sc_hs__a21o_2.spice
index 0c4d475..eaff8e6 100644
--- a/cells/a21o/sky130_fd_sc_hs__a21o_2.spice
+++ b/cells/a21o/sky130_fd_sc_hs__a21o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a21o_2 A1 A2 B1 VGND VNB VPB VPWR X
 M1000 X a_84_244# VGND VNB nlowvt w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_484_74# A1 a_84_244# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21o/sky130_fd_sc_hs__a21o_4.spice b/cells/a21o/sky130_fd_sc_hs__a21o_4.spice
index 2e19584..fc1b333 100644
--- a/cells/a21o/sky130_fd_sc_hs__a21o_4.spice
+++ b/cells/a21o/sky130_fd_sc_hs__a21o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a21o_4 A1 A2 B1 VGND VNB VPB VPWR X
 M1000 a_503_392# B1 a_91_48# VPB pshort w=1e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 VPWR a_91_48# X VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21oi/sky130_fd_sc_hs__a21oi_1.spice b/cells/a21oi/sky130_fd_sc_hs__a21oi_1.spice
index 828648d..88d65c4 100644
--- a/cells/a21oi/sky130_fd_sc_hs__a21oi_1.spice
+++ b/cells/a21oi/sky130_fd_sc_hs__a21oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a21oi_1 A1 A2 B1 VGND VNB VPB VPWR Y
 M1000 Y B1 a_29_368# VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__a21oi_2.spice b/cells/a21oi/sky130_fd_sc_hs__a21oi_2.spice
index 9105abc..0ec52a8 100644
--- a/cells/a21oi/sky130_fd_sc_hs__a21oi_2.spice
+++ b/cells/a21oi/sky130_fd_sc_hs__a21oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 Y B1 VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a21oi/sky130_fd_sc_hs__a21oi_4.spice b/cells/a21oi/sky130_fd_sc_hs__a21oi_4.spice
index 2cdac12..7964dc7 100644
--- a/cells/a21oi/sky130_fd_sc_hs__a21oi_4.spice
+++ b/cells/a21oi/sky130_fd_sc_hs__a21oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__a221o_1.spice b/cells/a221o/sky130_fd_sc_hs__a221o_1.spice
index 5b9bec5..a2b3b71 100644
--- a/cells/a221o/sky130_fd_sc_hs__a221o_1.spice
+++ b/cells/a221o/sky130_fd_sc_hs__a221o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a221o_1 A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 a_148_260# C1 VGND VNB nlowvt w=640000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_509_392# B2 a_310_392# VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a221o/sky130_fd_sc_hs__a221o_2.spice b/cells/a221o/sky130_fd_sc_hs__a221o_2.spice
index 2f50579..e265be8 100644
--- a/cells/a221o/sky130_fd_sc_hs__a221o_2.spice
+++ b/cells/a221o/sky130_fd_sc_hs__a221o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a221o_2 A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 a_89_260# A1 a_337_74# VNB nlowvt w=740000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_89_260# C1 VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a221o/sky130_fd_sc_hs__a221o_4.spice b/cells/a221o/sky130_fd_sc_hs__a221o_4.spice
index 3bbf30d..379605e 100644
--- a/cells/a221o/sky130_fd_sc_hs__a221o_4.spice
+++ b/cells/a221o/sky130_fd_sc_hs__a221o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a221o_4 A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 VPWR a_154_135# X VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__a221oi_1.spice b/cells/a221oi/sky130_fd_sc_hs__a221oi_1.spice
index 483a840..2629447 100644
--- a/cells/a221oi/sky130_fd_sc_hs__a221oi_1.spice
+++ b/cells/a221oi/sky130_fd_sc_hs__a221oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a221oi_1 A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 a_118_368# C1 Y VPB pshort w=1.12e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_263_368# A2 VPWR VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a221oi/sky130_fd_sc_hs__a221oi_2.spice b/cells/a221oi/sky130_fd_sc_hs__a221oi_2.spice
index 993f52d..30144b5 100644
--- a/cells/a221oi/sky130_fd_sc_hs__a221oi_2.spice
+++ b/cells/a221oi/sky130_fd_sc_hs__a221oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a221oi_2 A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 Y C1 a_29_368# VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__a221oi_4.spice b/cells/a221oi/sky130_fd_sc_hs__a221oi_4.spice
index ec79eb0..8b4e885 100644
--- a/cells/a221oi/sky130_fd_sc_hs__a221oi_4.spice
+++ b/cells/a221oi/sky130_fd_sc_hs__a221oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a221oi_4 A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 VPWR A1 a_531_368# VPB pshort w=1.12e+06u l=150000u
@@ -82,4 +97,3 @@
 M1039 VGND C1 Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a222o/sky130_fd_sc_hs__a222o_1.spice b/cells/a222o/sky130_fd_sc_hs__a222o_1.spice
index 82c1dc4..20bbbdd 100644
--- a/cells/a222o/sky130_fd_sc_hs__a222o_1.spice
+++ b/cells/a222o/sky130_fd_sc_hs__a222o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 a_337_390# B2 a_27_390# VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a222o/sky130_fd_sc_hs__a222o_2.spice b/cells/a222o/sky130_fd_sc_hs__a222o_2.spice
index 4320ee1..3f5b3d3 100644
--- a/cells/a222o/sky130_fd_sc_hs__a222o_2.spice
+++ b/cells/a222o/sky130_fd_sc_hs__a222o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__a222oi_1.spice b/cells/a222oi/sky130_fd_sc_hs__a222oi_1.spice
index 39f23bd..31f3b4b 100644
--- a/cells/a222oi/sky130_fd_sc_hs__a222oi_1.spice
+++ b/cells/a222oi/sky130_fd_sc_hs__a222oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 a_369_392# A2 VPWR VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a222oi/sky130_fd_sc_hs__a222oi_2.spice b/cells/a222oi/sky130_fd_sc_hs__a222oi_2.spice
index eee243c..47dcc44 100644
--- a/cells/a222oi/sky130_fd_sc_hs__a222oi_2.spice
+++ b/cells/a222oi/sky130_fd_sc_hs__a222oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__a22o_1.spice b/cells/a22o/sky130_fd_sc_hs__a22o_1.spice
index 1a37d7e..087a775 100644
--- a/cells/a22o/sky130_fd_sc_hs__a22o_1.spice
+++ b/cells/a22o/sky130_fd_sc_hs__a22o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a22o_1 A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 a_222_392# B1 a_230_79# VNB nlowvt w=640000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_132_392# A2 VPWR VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a22o/sky130_fd_sc_hs__a22o_2.spice b/cells/a22o/sky130_fd_sc_hs__a22o_2.spice
index 66cfb62..7ebcbf4 100644
--- a/cells/a22o/sky130_fd_sc_hs__a22o_2.spice
+++ b/cells/a22o/sky130_fd_sc_hs__a22o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a22o_2 A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 VGND a_81_48# X VNB nlowvt w=740000u l=150000u
@@ -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_hs__a22o_4.spice b/cells/a22o/sky130_fd_sc_hs__a22o_4.spice
index df8da32..e210769 100644
--- a/cells/a22o/sky130_fd_sc_hs__a22o_4.spice
+++ b/cells/a22o/sky130_fd_sc_hs__a22o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a22o_4 A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 X a_95_306# VPWR VPB pshort w=1.12e+06u 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_hs__a22oi_1.spice b/cells/a22oi/sky130_fd_sc_hs__a22oi_1.spice
index 5dcae46..6e3ac6d 100644
--- a/cells/a22oi/sky130_fd_sc_hs__a22oi_1.spice
+++ b/cells/a22oi/sky130_fd_sc_hs__a22oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a22oi_1 A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 Y B2 a_71_368# VPB pshort w=1.12e+06u 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_hs__a22oi_2.spice b/cells/a22oi/sky130_fd_sc_hs__a22oi_2.spice
index 93d2ec6..a0afdc2 100644
--- a/cells/a22oi/sky130_fd_sc_hs__a22oi_2.spice
+++ b/cells/a22oi/sky130_fd_sc_hs__a22oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a22oi_2 A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_66_368# B2 Y VPB pshort w=1.12e+06u l=150000u
@@ -34,4 +49,3 @@
 M1015 a_558_74# B2 VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a22oi/sky130_fd_sc_hs__a22oi_4.spice b/cells/a22oi/sky130_fd_sc_hs__a22oi_4.spice
index 01d7b84..3df80e0 100644
--- a/cells/a22oi/sky130_fd_sc_hs__a22oi_4.spice
+++ b/cells/a22oi/sky130_fd_sc_hs__a22oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a22oi_4 A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_45_368# A2 VPWR VPB pshort w=1.12e+06u l=150000u
@@ -66,4 +81,3 @@
 M1031 VPWR A2 a_45_368# VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2bb2o/sky130_fd_sc_hs__a2bb2o_1.spice b/cells/a2bb2o/sky130_fd_sc_hs__a2bb2o_1.spice
index 50b2995..3033e4e 100644
--- a/cells/a2bb2o/sky130_fd_sc_hs__a2bb2o_1.spice
+++ b/cells/a2bb2o/sky130_fd_sc_hs__a2bb2o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a2bb2o_1 A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 a_530_392# B1 VPWR VPB pshort w=1e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_257_126# A2_N a_258_392# VPB pshort w=1e+06u l=150000u
 +  ad=2.75e+11p pd=2.55e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/a2bb2o/sky130_fd_sc_hs__a2bb2o_2.spice b/cells/a2bb2o/sky130_fd_sc_hs__a2bb2o_2.spice
index f77cc4f..ec3d417 100644
--- a/cells/a2bb2o/sky130_fd_sc_hs__a2bb2o_2.spice
+++ b/cells/a2bb2o/sky130_fd_sc_hs__a2bb2o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a2bb2o_2 A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 X a_221_74# VGND VNB nlowvt w=740000u l=150000u
@@ -30,4 +45,3 @@
 M1013 VPWR A1_N a_546_378# VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2bb2o/sky130_fd_sc_hs__a2bb2o_4.spice b/cells/a2bb2o/sky130_fd_sc_hs__a2bb2o_4.spice
index 50e9f73..5138039 100644
--- a/cells/a2bb2o/sky130_fd_sc_hs__a2bb2o_4.spice
+++ b/cells/a2bb2o/sky130_fd_sc_hs__a2bb2o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a2bb2o_4 A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 VPWR a_162_48# X VPB pshort w=1.12e+06u l=150000u
@@ -48,4 +63,3 @@
 M1022 a_820_392# B1 VPWR VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2bb2oi/sky130_fd_sc_hs__a2bb2oi_1.spice b/cells/a2bb2oi/sky130_fd_sc_hs__a2bb2oi_1.spice
index 0e48aec..887b356 100644
--- a/cells/a2bb2oi/sky130_fd_sc_hs__a2bb2oi_1.spice
+++ b/cells/a2bb2oi/sky130_fd_sc_hs__a2bb2oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__a2bb2oi_2.spice b/cells/a2bb2oi/sky130_fd_sc_hs__a2bb2oi_2.spice
index e3f1833..fc92b5f 100644
--- a/cells/a2bb2oi/sky130_fd_sc_hs__a2bb2oi_2.spice
+++ b/cells/a2bb2oi/sky130_fd_sc_hs__a2bb2oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a2bb2oi_2 A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 VPWR B1 a_424_368# VPB pshort w=1.12e+06u l=150000u
@@ -34,4 +49,3 @@
 M1015 a_424_368# B2 VPWR VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a2bb2oi/sky130_fd_sc_hs__a2bb2oi_4.spice b/cells/a2bb2oi/sky130_fd_sc_hs__a2bb2oi_4.spice
index 166719f..bd1a692 100644
--- a/cells/a2bb2oi/sky130_fd_sc_hs__a2bb2oi_4.spice
+++ b/cells/a2bb2oi/sky130_fd_sc_hs__a2bb2oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a2bb2oi_4 A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 a_539_368# a_114_392# Y VPB pshort w=1.12e+06u 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_hs__a311o_1.spice b/cells/a311o/sky130_fd_sc_hs__a311o_1.spice
index ab302fb..11627aa 100644
--- a/cells/a311o/sky130_fd_sc_hs__a311o_1.spice
+++ b/cells/a311o/sky130_fd_sc_hs__a311o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a311o_1 A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 VGND B1 a_89_270# VNB nlowvt w=640000u l=150000u
@@ -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_hs__a311o_2.spice b/cells/a311o/sky130_fd_sc_hs__a311o_2.spice
index 21e6ba1..fa98a7a 100644
--- a/cells/a311o/sky130_fd_sc_hs__a311o_2.spice
+++ b/cells/a311o/sky130_fd_sc_hs__a311o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a311o_2 A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 a_660_392# B1 a_330_392# VPB pshort w=1e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_21_270# A1 a_423_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a311o/sky130_fd_sc_hs__a311o_4.spice b/cells/a311o/sky130_fd_sc_hs__a311o_4.spice
index 38e2c8c..a5bc236 100644
--- a/cells/a311o/sky130_fd_sc_hs__a311o_4.spice
+++ b/cells/a311o/sky130_fd_sc_hs__a311o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a311o_4 A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 X a_154_392# VPWR VPB pshort w=1.12e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 VPWR a_154_392# X VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a311oi/sky130_fd_sc_hs__a311oi_1.spice b/cells/a311oi/sky130_fd_sc_hs__a311oi_1.spice
index 318cad9..104a684 100644
--- a/cells/a311oi/sky130_fd_sc_hs__a311oi_1.spice
+++ b/cells/a311oi/sky130_fd_sc_hs__a311oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a311oi_1 A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_156_368# A3 VPWR VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__a311oi_2.spice b/cells/a311oi/sky130_fd_sc_hs__a311oi_2.spice
index 391c561..6303367 100644
--- a/cells/a311oi/sky130_fd_sc_hs__a311oi_2.spice
+++ b/cells/a311oi/sky130_fd_sc_hs__a311oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 a_300_74# A1 Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a311oi/sky130_fd_sc_hs__a311oi_4.spice b/cells/a311oi/sky130_fd_sc_hs__a311oi_4.spice
index b7eb69e..fb68a3e 100644
--- a/cells/a311oi/sky130_fd_sc_hs__a311oi_4.spice
+++ b/cells/a311oi/sky130_fd_sc_hs__a311oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a311oi_4 A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_465_74# A2 a_34_74# VNB nlowvt w=740000u l=150000u
@@ -74,4 +89,3 @@
 M1035 VGND C1 Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31o/sky130_fd_sc_hs__a31o_1.spice b/cells/a31o/sky130_fd_sc_hs__a31o_1.spice
index 09cc45d..fb3c710 100644
--- a/cells/a31o/sky130_fd_sc_hs__a31o_1.spice
+++ b/cells/a31o/sky130_fd_sc_hs__a31o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a31o_1 A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 VPWR a_81_270# X VPB pshort w=1.12e+06u 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_hs__a31o_2.spice b/cells/a31o/sky130_fd_sc_hs__a31o_2.spice
index 7897797..3e1b641 100644
--- a/cells/a31o/sky130_fd_sc_hs__a31o_2.spice
+++ b/cells/a31o/sky130_fd_sc_hs__a31o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 VPWR A2 a_362_368# VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31o/sky130_fd_sc_hs__a31o_4.spice b/cells/a31o/sky130_fd_sc_hs__a31o_4.spice
index d00bec5..84de0de 100644
--- a/cells/a31o/sky130_fd_sc_hs__a31o_4.spice
+++ b/cells/a31o/sky130_fd_sc_hs__a31o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a31o_4 A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 a_529_392# B1 a_83_274# VPB pshort w=1e+06u l=150000u
@@ -50,4 +65,3 @@
 M1023 VPWR A2 a_529_392# VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31oi/sky130_fd_sc_hs__a31oi_1.spice b/cells/a31oi/sky130_fd_sc_hs__a31oi_1.spice
index fc5479c..f55c248 100644
--- a/cells/a31oi/sky130_fd_sc_hs__a31oi_1.spice
+++ b/cells/a31oi/sky130_fd_sc_hs__a31oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a31oi_1 A1 A2 A3 B1 VGND VNB VPB VPWR Y
 M1000 a_136_368# A3 VPWR VPB pshort w=1.12e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_145_74# A3 VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31oi/sky130_fd_sc_hs__a31oi_2.spice b/cells/a31oi/sky130_fd_sc_hs__a31oi_2.spice
index abf9be1..c22965d 100644
--- a/cells/a31oi/sky130_fd_sc_hs__a31oi_2.spice
+++ b/cells/a31oi/sky130_fd_sc_hs__a31oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_200_74# A2 a_114_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a31oi/sky130_fd_sc_hs__a31oi_4.spice b/cells/a31oi/sky130_fd_sc_hs__a31oi_4.spice
index 1381433..4db6d18 100644
--- a/cells/a31oi/sky130_fd_sc_hs__a31oi_4.spice
+++ b/cells/a31oi/sky130_fd_sc_hs__a31oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__a32o_1.spice b/cells/a32o/sky130_fd_sc_hs__a32o_1.spice
index 2957667..6b749c3 100644
--- a/cells/a32o/sky130_fd_sc_hs__a32o_1.spice
+++ b/cells/a32o/sky130_fd_sc_hs__a32o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a32o_1 A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 VPWR a_84_48# X VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__a32o_2.spice b/cells/a32o/sky130_fd_sc_hs__a32o_2.spice
index d156a06..4b8d580 100644
--- a/cells/a32o/sky130_fd_sc_hs__a32o_2.spice
+++ b/cells/a32o/sky130_fd_sc_hs__a32o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a32o_2 A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 a_346_368# A3 VPWR VPB pshort w=1e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_45_264# A1 a_433_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a32o/sky130_fd_sc_hs__a32o_4.spice b/cells/a32o/sky130_fd_sc_hs__a32o_4.spice
index 1d2727d..28b373f 100644
--- a/cells/a32o/sky130_fd_sc_hs__a32o_4.spice
+++ b/cells/a32o/sky130_fd_sc_hs__a32o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 a_1079_122# A1 a_83_283# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a32oi/sky130_fd_sc_hs__a32oi_1.spice b/cells/a32oi/sky130_fd_sc_hs__a32oi_1.spice
index a2bb9bd..7986c86 100644
--- a/cells/a32oi/sky130_fd_sc_hs__a32oi_1.spice
+++ b/cells/a32oi/sky130_fd_sc_hs__a32oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__a32oi_2.spice b/cells/a32oi/sky130_fd_sc_hs__a32oi_2.spice
index fbfd0cc..79189a1 100644
--- a/cells/a32oi/sky130_fd_sc_hs__a32oi_2.spice
+++ b/cells/a32oi/sky130_fd_sc_hs__a32oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a32oi_2 A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_27_368# A1 VPWR VPB pshort w=1.12e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_507_74# A1 Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a32oi/sky130_fd_sc_hs__a32oi_4.spice b/cells/a32oi/sky130_fd_sc_hs__a32oi_4.spice
index a920bb6..3312750 100644
--- a/cells/a32oi/sky130_fd_sc_hs__a32oi_4.spice
+++ b/cells/a32oi/sky130_fd_sc_hs__a32oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a32oi_4 A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_868_74# A2 a_1313_74# VNB nlowvt w=740000u l=150000u
@@ -82,4 +97,3 @@
 M1039 VPWR A1 a_27_368# VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41o/sky130_fd_sc_hs__a41o_1.spice b/cells/a41o/sky130_fd_sc_hs__a41o_1.spice
index 65729be..a5d48dd 100644
--- a/cells/a41o/sky130_fd_sc_hs__a41o_1.spice
+++ b/cells/a41o/sky130_fd_sc_hs__a41o_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a41o_1 A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 VPWR A3 a_354_392# VPB pshort w=1e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_354_392# A2 VPWR VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41o/sky130_fd_sc_hs__a41o_2.spice b/cells/a41o/sky130_fd_sc_hs__a41o_2.spice
index 0ec09e6..1b0e65e 100644
--- a/cells/a41o/sky130_fd_sc_hs__a41o_2.spice
+++ b/cells/a41o/sky130_fd_sc_hs__a41o_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a41o_2 A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 a_27_392# A3 VPWR VPB pshort w=1e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 VGND a_441_74# X VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41o/sky130_fd_sc_hs__a41o_4.spice b/cells/a41o/sky130_fd_sc_hs__a41o_4.spice
index a85b079..784cbaa 100644
--- a/cells/a41o/sky130_fd_sc_hs__a41o_4.spice
+++ b/cells/a41o/sky130_fd_sc_hs__a41o_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a41o_4 A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 VPWR a_113_98# X VPB pshort w=1.12e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 X a_113_98# VPWR VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41oi/sky130_fd_sc_hs__a41oi_1.spice b/cells/a41oi/sky130_fd_sc_hs__a41oi_1.spice
index 5b75b84..12eb971 100644
--- a/cells/a41oi/sky130_fd_sc_hs__a41oi_1.spice
+++ b/cells/a41oi/sky130_fd_sc_hs__a41oi_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a41oi_1 A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 Y A1 a_469_74# VNB nlowvt w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_469_74# A2 a_355_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41oi/sky130_fd_sc_hs__a41oi_2.spice b/cells/a41oi/sky130_fd_sc_hs__a41oi_2.spice
index db0f5ec..873303e 100644
--- a/cells/a41oi/sky130_fd_sc_hs__a41oi_2.spice
+++ b/cells/a41oi/sky130_fd_sc_hs__a41oi_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a41oi_2 A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 a_709_74# A3 a_512_74# VNB nlowvt w=740000u l=150000u
@@ -40,4 +55,3 @@
 M1018 VPWR A4 a_27_368# VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/a41oi/sky130_fd_sc_hs__a41oi_4.spice b/cells/a41oi/sky130_fd_sc_hs__a41oi_4.spice
index c747cc0..5d7a32e 100644
--- a/cells/a41oi/sky130_fd_sc_hs__a41oi_4.spice
+++ b/cells/a41oi/sky130_fd_sc_hs__a41oi_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__a41oi_4 A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 VPWR A2 a_27_368# VPB pshort w=1.12e+06u l=150000u
@@ -78,4 +93,3 @@
 M1037 a_325_74# A1 Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and2/sky130_fd_sc_hs__and2_1.spice b/cells/and2/sky130_fd_sc_hs__and2_1.spice
index 7bb729b..ee08c96 100644
--- a/cells/and2/sky130_fd_sc_hs__and2_1.spice
+++ b/cells/and2/sky130_fd_sc_hs__and2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__and2_1 A B VGND VNB VPB VPWR X
 M1000 X a_56_136# VPWR VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__and2_2.spice b/cells/and2/sky130_fd_sc_hs__and2_2.spice
index 7d753b1..3ad5817 100644
--- a/cells/and2/sky130_fd_sc_hs__and2_2.spice
+++ b/cells/and2/sky130_fd_sc_hs__and2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__and2_2 A B VGND VNB VPB VPWR X
 M1000 VGND B a_118_74# VNB nlowvt w=740000u l=150000u
@@ -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_hs__and2_4.spice b/cells/and2/sky130_fd_sc_hs__and2_4.spice
index 84a4e82..401458f 100644
--- a/cells/and2/sky130_fd_sc_hs__and2_4.spice
+++ b/cells/and2/sky130_fd_sc_hs__and2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__and2_4 A B VGND VNB VPB VPWR X
 M1000 a_83_269# B VPWR VPB pshort w=840000u l=150000u
@@ -34,4 +49,3 @@
 M1015 X a_83_269# VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and2b/sky130_fd_sc_hs__and2b_1.spice b/cells/and2b/sky130_fd_sc_hs__and2b_1.spice
index a534467..98f3556 100644
--- a/cells/and2b/sky130_fd_sc_hs__and2b_1.spice
+++ b/cells/and2b/sky130_fd_sc_hs__and2b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 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/and2b/sky130_fd_sc_hs__and2b_2.spice b/cells/and2b/sky130_fd_sc_hs__and2b_2.spice
index 97a5e86..bcdb3a4 100644
--- a/cells/and2b/sky130_fd_sc_hs__and2b_2.spice
+++ b/cells/and2b/sky130_fd_sc_hs__and2b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__and2b_4.spice b/cells/and2b/sky130_fd_sc_hs__and2b_4.spice
index 81c20a4..cebe3a4 100644
--- a/cells/and2b/sky130_fd_sc_hs__and2b_4.spice
+++ b/cells/and2b/sky130_fd_sc_hs__and2b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__and2b_4 A_N B VGND VNB VPB VPWR X
 M1000 VGND a_218_424# X VNB nlowvt w=740000u l=150000u
@@ -38,4 +53,3 @@
 M1017 VGND B a_233_74# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and3/sky130_fd_sc_hs__and3_1.spice b/cells/and3/sky130_fd_sc_hs__and3_1.spice
index 0b853a6..6c43e1b 100644
--- a/cells/and3/sky130_fd_sc_hs__and3_1.spice
+++ b/cells/and3/sky130_fd_sc_hs__and3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__and3_1 A B C VGND VNB VPB VPWR X
 M1000 VPWR C a_27_398# VPB pshort w=840000u l=150000u
@@ -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_hs__and3_2.spice b/cells/and3/sky130_fd_sc_hs__and3_2.spice
index 3ab0425..59f8614 100644
--- a/cells/and3/sky130_fd_sc_hs__and3_2.spice
+++ b/cells/and3/sky130_fd_sc_hs__and3_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__and3_4.spice b/cells/and3/sky130_fd_sc_hs__and3_4.spice
index 47049e4..ac53760 100644
--- a/cells/and3/sky130_fd_sc_hs__and3_4.spice
+++ b/cells/and3/sky130_fd_sc_hs__and3_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__and3b_1.spice b/cells/and3b/sky130_fd_sc_hs__and3b_1.spice
index b6a024e..44ee9f7 100644
--- a/cells/and3b/sky130_fd_sc_hs__and3b_1.spice
+++ b/cells/and3b/sky130_fd_sc_hs__and3b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__and3b_1 A_N B C VGND VNB VPB VPWR X
 M1000 VPWR C a_266_94# VPB pshort w=840000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND C a_431_94# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and3b/sky130_fd_sc_hs__and3b_2.spice b/cells/and3b/sky130_fd_sc_hs__and3b_2.spice
index ba1ed06..1f218f1 100644
--- a/cells/and3b/sky130_fd_sc_hs__and3b_2.spice
+++ b/cells/and3b/sky130_fd_sc_hs__and3b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 VGND a_284_368# X VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and3b/sky130_fd_sc_hs__and3b_4.spice b/cells/and3b/sky130_fd_sc_hs__and3b_4.spice
index d743737..26032dc 100644
--- a/cells/and3b/sky130_fd_sc_hs__and3b_4.spice
+++ b/cells/and3b/sky130_fd_sc_hs__and3b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__and3b_4 A_N B C VGND VNB VPB VPWR X
 M1000 a_239_98# a_27_74# a_298_368# VNB nlowvt w=640000u l=150000u
@@ -46,4 +61,3 @@
 M1021 VPWR C a_298_368# VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4/sky130_fd_sc_hs__and4_1.spice b/cells/and4/sky130_fd_sc_hs__and4_1.spice
index 2418f3e..c2a5d36 100644
--- a/cells/and4/sky130_fd_sc_hs__and4_1.spice
+++ b/cells/and4/sky130_fd_sc_hs__and4_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__and4_1 A B C D VGND VNB VPB VPWR X
 M1000 VGND D a_335_74# VNB nlowvt w=640000u l=150000u
@@ -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_hs__and4_2.spice b/cells/and4/sky130_fd_sc_hs__and4_2.spice
index d63123d..9ce7afd 100644
--- a/cells/and4/sky130_fd_sc_hs__and4_2.spice
+++ b/cells/and4/sky130_fd_sc_hs__and4_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__and4_4.spice b/cells/and4/sky130_fd_sc_hs__and4_4.spice
index 2c981f8..9d679c6 100644
--- a/cells/and4/sky130_fd_sc_hs__and4_4.spice
+++ b/cells/and4/sky130_fd_sc_hs__and4_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__and4_4 A B C D VGND VNB VPB VPWR X
 M1000 a_116_392# A a_119_119# VNB nlowvt w=640000u l=150000u
@@ -50,4 +65,3 @@
 M1023 VGND a_116_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_hs__and4b_1.spice b/cells/and4b/sky130_fd_sc_hs__and4b_1.spice
index 8971ca0..055c123 100644
--- a/cells/and4b/sky130_fd_sc_hs__and4b_1.spice
+++ b/cells/and4b/sky130_fd_sc_hs__and4b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__and4b_2.spice b/cells/and4b/sky130_fd_sc_hs__and4b_2.spice
index 6f3199f..4fb0637 100644
--- a/cells/and4b/sky130_fd_sc_hs__and4b_2.spice
+++ b/cells/and4b/sky130_fd_sc_hs__and4b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 VPWR a_27_112# a_186_48# VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4b/sky130_fd_sc_hs__and4b_4.spice b/cells/and4b/sky130_fd_sc_hs__and4b_4.spice
index 215635c..32b258d 100644
--- a/cells/and4b/sky130_fd_sc_hs__and4b_4.spice
+++ b/cells/and4b/sky130_fd_sc_hs__and4b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 VPWR B a_199_294# VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4bb/sky130_fd_sc_hs__and4bb_1.spice b/cells/and4bb/sky130_fd_sc_hs__and4bb_1.spice
index d500457..440c4af 100644
--- a/cells/and4bb/sky130_fd_sc_hs__and4bb_1.spice
+++ b/cells/and4bb/sky130_fd_sc_hs__and4bb_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__and4bb_1 A_N B_N C D VGND VNB VPB VPWR X
 M1000 VPWR D a_179_48# VPB pshort w=840000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_179_48# C VPWR VPB pshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/and4bb/sky130_fd_sc_hs__and4bb_2.spice b/cells/and4bb/sky130_fd_sc_hs__and4bb_2.spice
index 9c58a79..52c7dee 100644
--- a/cells/and4bb/sky130_fd_sc_hs__and4bb_2.spice
+++ b/cells/and4bb/sky130_fd_sc_hs__and4bb_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__and4bb_2 A_N B_N C D VGND VNB VPB VPWR X
 M1000 VPWR a_354_252# a_225_82# VPB pshort w=1e+06u l=150000u
@@ -34,4 +49,3 @@
 M1015 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_hs__and4bb_4.spice b/cells/and4bb/sky130_fd_sc_hs__and4bb_4.spice
index b2da1ba..4a4d9f8 100644
--- a/cells/and4bb/sky130_fd_sc_hs__and4bb_4.spice
+++ b/cells/and4bb/sky130_fd_sc_hs__and4bb_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_472_388# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/buf/sky130_fd_sc_hs__buf_1.spice b/cells/buf/sky130_fd_sc_hs__buf_1.spice
index 7d54bf1..c64aabf 100644
--- a/cells/buf/sky130_fd_sc_hs__buf_1.spice
+++ b/cells/buf/sky130_fd_sc_hs__buf_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__buf_1 A VGND VNB VPB VPWR X
 M1000 X a_27_164# VPWR VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__buf_16.spice b/cells/buf/sky130_fd_sc_hs__buf_16.spice
index b644fd3..f6a62c0 100644
--- a/cells/buf/sky130_fd_sc_hs__buf_16.spice
+++ b/cells/buf/sky130_fd_sc_hs__buf_16.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__buf_16 A VGND VNB VPB VPWR X
 M1000 a_83_260# A VPWR VPB pshort w=1.12e+06u 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_hs__buf_2.spice b/cells/buf/sky130_fd_sc_hs__buf_2.spice
index 4fd5d94..8c0d31b 100644
--- a/cells/buf/sky130_fd_sc_hs__buf_2.spice
+++ b/cells/buf/sky130_fd_sc_hs__buf_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__buf_2 A VGND VNB VPB VPWR X
 M1000 VGND a_21_260# X VNB nlowvt w=740000u l=150000u
@@ -14,4 +29,3 @@
 M1005 a_21_260# A VPWR VPB pshort w=1e+06u l=150000u
 +  ad=3.2e+11p pd=2.64e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/buf/sky130_fd_sc_hs__buf_4.spice b/cells/buf/sky130_fd_sc_hs__buf_4.spice
index ad7ea91..a094535 100644
--- a/cells/buf/sky130_fd_sc_hs__buf_4.spice
+++ b/cells/buf/sky130_fd_sc_hs__buf_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 VPWR a_86_260# X VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/buf/sky130_fd_sc_hs__buf_8.spice b/cells/buf/sky130_fd_sc_hs__buf_8.spice
index c08fcc5..4440c2f 100644
--- a/cells/buf/sky130_fd_sc_hs__buf_8.spice
+++ b/cells/buf/sky130_fd_sc_hs__buf_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 VGND a_27_74# X VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/bufbuf/sky130_fd_sc_hs__bufbuf_16.spice b/cells/bufbuf/sky130_fd_sc_hs__bufbuf_16.spice
index a2b355c..2cd4c9f 100644
--- a/cells/bufbuf/sky130_fd_sc_hs__bufbuf_16.spice
+++ b/cells/bufbuf/sky130_fd_sc_hs__bufbuf_16.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__bufbuf_16 A VGND VNB VPB VPWR X
 M1000 VPWR a_203_74# a_588_74# VPB pshort w=1.12e+06u 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_hs__bufbuf_8.spice b/cells/bufbuf/sky130_fd_sc_hs__bufbuf_8.spice
index 9d4061a..a2293ea 100644
--- a/cells/bufbuf/sky130_fd_sc_hs__bufbuf_8.spice
+++ b/cells/bufbuf/sky130_fd_sc_hs__bufbuf_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__bufbuf_8 A VGND VNB VPB VPWR X
 M1000 VGND a_334_368# X VNB nlowvt w=740000u l=150000u
@@ -54,4 +69,3 @@
 M1025 X a_334_368# VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/bufinv/sky130_fd_sc_hs__bufinv_16.spice b/cells/bufinv/sky130_fd_sc_hs__bufinv_16.spice
index 1dceeaf..319af8e 100644
--- a/cells/bufinv/sky130_fd_sc_hs__bufinv_16.spice
+++ b/cells/bufinv/sky130_fd_sc_hs__bufinv_16.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__bufinv_16 A VGND VNB VPB VPWR Y
 M1000 VPWR a_27_74# a_384_74# VPB pshort w=1.12e+06u 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_hs__bufinv_8.spice b/cells/bufinv/sky130_fd_sc_hs__bufinv_8.spice
index e0ba8b8..b2575ba 100644
--- a/cells/bufinv/sky130_fd_sc_hs__bufinv_8.spice
+++ b/cells/bufinv/sky130_fd_sc_hs__bufinv_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__bufinv_8 A VGND VNB VPB VPWR Y
 M1000 Y a_183_48# VGND VNB nlowvt w=740000u l=150000u
@@ -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_hs__clkbuf_1.spice b/cells/clkbuf/sky130_fd_sc_hs__clkbuf_1.spice
index 2304acd..27d643e 100644
--- a/cells/clkbuf/sky130_fd_sc_hs__clkbuf_1.spice
+++ b/cells/clkbuf/sky130_fd_sc_hs__clkbuf_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__clkbuf_1 A VGND VNB VPB VPWR X
 M1000 X a_27_74# VPWR VPB pshort w=1.12e+06u l=150000u
@@ -10,4 +25,3 @@
 M1003 VPWR A a_27_74# VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=3.304e+11p ps=2.83e+06u
 .ends
-
diff --git a/cells/clkbuf/sky130_fd_sc_hs__clkbuf_16.spice b/cells/clkbuf/sky130_fd_sc_hs__clkbuf_16.spice
index e627988..bfa850a 100644
--- a/cells/clkbuf/sky130_fd_sc_hs__clkbuf_16.spice
+++ b/cells/clkbuf/sky130_fd_sc_hs__clkbuf_16.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkbuf/sky130_fd_sc_hs__clkbuf_2.spice b/cells/clkbuf/sky130_fd_sc_hs__clkbuf_2.spice
index 38e0d44..f807fcd 100644
--- a/cells/clkbuf/sky130_fd_sc_hs__clkbuf_2.spice
+++ b/cells/clkbuf/sky130_fd_sc_hs__clkbuf_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__clkbuf_2 A VGND VNB VPB VPWR X
 M1000 X a_43_192# VPWR VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__clkbuf_4.spice b/cells/clkbuf/sky130_fd_sc_hs__clkbuf_4.spice
index 3f9a9cc..2631f7b 100644
--- a/cells/clkbuf/sky130_fd_sc_hs__clkbuf_4.spice
+++ b/cells/clkbuf/sky130_fd_sc_hs__clkbuf_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__clkbuf_8.spice b/cells/clkbuf/sky130_fd_sc_hs__clkbuf_8.spice
index f0b3c6c..0b38cc6 100644
--- a/cells/clkbuf/sky130_fd_sc_hs__clkbuf_8.spice
+++ b/cells/clkbuf/sky130_fd_sc_hs__clkbuf_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__clkbuf_8 A VGND VNB VPB VPWR X
 M1000 VGND a_125_368# X VNB nlowvt w=420000u l=150000u
@@ -42,4 +57,3 @@
 M1019 X a_125_368# VGND VNB nlowvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkdlyinv3sd1/sky130_fd_sc_hs__clkdlyinv3sd1_1.spice b/cells/clkdlyinv3sd1/sky130_fd_sc_hs__clkdlyinv3sd1_1.spice
index ab50c73..e0e533d 100644
--- a/cells/clkdlyinv3sd1/sky130_fd_sc_hs__clkdlyinv3sd1_1.spice
+++ b/cells/clkdlyinv3sd1/sky130_fd_sc_hs__clkdlyinv3sd1_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__clkdlyinv3sd1_1 A VGND VNB VPB VPWR Y
 M1000 VPWR A a_28_74# VPB pshort w=1.12e+06u l=150000u
@@ -14,4 +29,3 @@
 M1005 Y a_285_392# 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_hs__clkdlyinv3sd2_1.spice b/cells/clkdlyinv3sd2/sky130_fd_sc_hs__clkdlyinv3sd2_1.spice
index 126b7af..bc2275d 100644
--- a/cells/clkdlyinv3sd2/sky130_fd_sc_hs__clkdlyinv3sd2_1.spice
+++ b/cells/clkdlyinv3sd2/sky130_fd_sc_hs__clkdlyinv3sd2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__clkdlyinv3sd2_1 A VGND VNB VPB VPWR Y
 M1000 VPWR A a_28_74# VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__clkdlyinv3sd3_1.spice b/cells/clkdlyinv3sd3/sky130_fd_sc_hs__clkdlyinv3sd3_1.spice
index 4d4401b..fe3a39e 100644
--- a/cells/clkdlyinv3sd3/sky130_fd_sc_hs__clkdlyinv3sd3_1.spice
+++ b/cells/clkdlyinv3sd3/sky130_fd_sc_hs__clkdlyinv3sd3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__clkdlyinv3sd3_1 A VGND VNB VPB VPWR Y
 M1000 VPWR A a_28_74# VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__clkdlyinv5sd1_1.spice b/cells/clkdlyinv5sd1/sky130_fd_sc_hs__clkdlyinv5sd1_1.spice
index dc3adbe..50a74f8 100644
--- a/cells/clkdlyinv5sd1/sky130_fd_sc_hs__clkdlyinv5sd1_1.spice
+++ b/cells/clkdlyinv5sd1/sky130_fd_sc_hs__clkdlyinv5sd1_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__clkdlyinv5sd2_1.spice b/cells/clkdlyinv5sd2/sky130_fd_sc_hs__clkdlyinv5sd2_1.spice
index 5eac3fd..afac93d 100644
--- a/cells/clkdlyinv5sd2/sky130_fd_sc_hs__clkdlyinv5sd2_1.spice
+++ b/cells/clkdlyinv5sd2/sky130_fd_sc_hs__clkdlyinv5sd2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__clkdlyinv5sd2_1 A VGND VNB VPB VPWR Y
 M1000 VPWR A a_28_74# VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__clkdlyinv5sd3_1.spice b/cells/clkdlyinv5sd3/sky130_fd_sc_hs__clkdlyinv5sd3_1.spice
index 4157da6..b0b9173 100644
--- a/cells/clkdlyinv5sd3/sky130_fd_sc_hs__clkdlyinv5sd3_1.spice
+++ b/cells/clkdlyinv5sd3/sky130_fd_sc_hs__clkdlyinv5sd3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 VGND A a_28_74# VNB nlowvt w=420000u l=150000u
 +  ad=0p pd=0u as=1.113e+11p ps=1.37e+06u
 .ends
-
diff --git a/cells/clkinv/sky130_fd_sc_hs__clkinv_1.spice b/cells/clkinv/sky130_fd_sc_hs__clkinv_1.spice
index 86450cf..0e0ae83 100644
--- a/cells/clkinv/sky130_fd_sc_hs__clkinv_1.spice
+++ b/cells/clkinv/sky130_fd_sc_hs__clkinv_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__clkinv_1 A VGND VNB VPB VPWR Y
 M1000 VPWR A Y VPB pshort w=840000u l=150000u
@@ -8,4 +23,3 @@
 M1002 Y A VGND VNB nlowvt w=420000u l=150000u
 +  ad=2.2535e+11p pd=2.17e+06u as=1.491e+11p ps=1.55e+06u
 .ends
-
diff --git a/cells/clkinv/sky130_fd_sc_hs__clkinv_16.spice b/cells/clkinv/sky130_fd_sc_hs__clkinv_16.spice
index ec900b0..af9c117 100644
--- a/cells/clkinv/sky130_fd_sc_hs__clkinv_16.spice
+++ b/cells/clkinv/sky130_fd_sc_hs__clkinv_16.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__clkinv_16 A VGND VNB VPB VPWR Y
 M1000 Y A VGND VNB nlowvt w=420000u l=150000u
@@ -82,4 +97,3 @@
 M1039 VPWR A Y VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkinv/sky130_fd_sc_hs__clkinv_2.spice b/cells/clkinv/sky130_fd_sc_hs__clkinv_2.spice
index d5cc9b9..4493aba 100644
--- a/cells/clkinv/sky130_fd_sc_hs__clkinv_2.spice
+++ b/cells/clkinv/sky130_fd_sc_hs__clkinv_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__clkinv_2 A VGND VNB VPB VPWR Y
 M1000 VGND A Y VNB nlowvt w=420000u l=150000u
@@ -12,4 +27,3 @@
 M1004 VPWR A Y VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/clkinv/sky130_fd_sc_hs__clkinv_4.spice b/cells/clkinv/sky130_fd_sc_hs__clkinv_4.spice
index cd23650..acb0e47 100644
--- a/cells/clkinv/sky130_fd_sc_hs__clkinv_4.spice
+++ b/cells/clkinv/sky130_fd_sc_hs__clkinv_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__clkinv_8.spice b/cells/clkinv/sky130_fd_sc_hs__clkinv_8.spice
index f4098b0..b41de47 100644
--- a/cells/clkinv/sky130_fd_sc_hs__clkinv_8.spice
+++ b/cells/clkinv/sky130_fd_sc_hs__clkinv_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__conb_1.spice b/cells/conb/sky130_fd_sc_hs__conb_1.spice
index 8b48103..2882ba7 100644
--- a/cells/conb/sky130_fd_sc_hs__conb_1.spice
+++ b/cells/conb/sky130_fd_sc_hs__conb_1.spice
@@ -1,7 +1,21 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__decap_4.spice b/cells/decap/sky130_fd_sc_hs__decap_4.spice
index 6b6a503..6145e41 100644
--- a/cells/decap/sky130_fd_sc_hs__decap_4.spice
+++ b/cells/decap/sky130_fd_sc_hs__decap_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__decap_8.spice b/cells/decap/sky130_fd_sc_hs__decap_8.spice
index 97fd636..4c8cd21 100644
--- a/cells/decap/sky130_fd_sc_hs__decap_8.spice
+++ b/cells/decap/sky130_fd_sc_hs__decap_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__dfbbn_1.spice b/cells/dfbbn/sky130_fd_sc_hs__dfbbn_1.spice
index f786ea0..ff08dbb 100644
--- a/cells/dfbbn/sky130_fd_sc_hs__dfbbn_1.spice
+++ b/cells/dfbbn/sky130_fd_sc_hs__dfbbn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dfbbn_1 CLK_N D RESET_B SET_B VGND VNB VPB VPWR Q Q_N
 M1000 VPWR a_1534_446# a_1483_508# VPB pshort w=420000u l=150000u
@@ -82,4 +97,3 @@
 M1039 VPWR SET_B a_1534_446# VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfbbn/sky130_fd_sc_hs__dfbbn_2.spice b/cells/dfbbn/sky130_fd_sc_hs__dfbbn_2.spice
index 4641111..825bb87 100644
--- a/cells/dfbbn/sky130_fd_sc_hs__dfbbn_2.spice
+++ b/cells/dfbbn/sky130_fd_sc_hs__dfbbn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dfbbn_2 CLK_N D RESET_B SET_B VGND VNB VPB VPWR Q Q_N
 M1000 VPWR CLK_N a_27_74# VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__dfbbp_1.spice b/cells/dfbbp/sky130_fd_sc_hs__dfbbp_1.spice
index e425674..da12a7c 100644
--- a/cells/dfbbp/sky130_fd_sc_hs__dfbbp_1.spice
+++ b/cells/dfbbp/sky130_fd_sc_hs__dfbbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dfbbp_1 CLK D RESET_B SET_B VGND VNB VPB VPWR Q Q_N
 M1000 VPWR a_1474_446# a_2320_410# VPB pshort w=840000u l=150000u
@@ -82,4 +97,3 @@
 M1039 VPWR a_1062_93# a_1814_392# VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfrbp/sky130_fd_sc_hs__dfrbp_1.spice b/cells/dfrbp/sky130_fd_sc_hs__dfrbp_1.spice
index 4971177..69996e3 100644
--- a/cells/dfrbp/sky130_fd_sc_hs__dfrbp_1.spice
+++ b/cells/dfrbp/sky130_fd_sc_hs__dfrbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dfrbp_1 CLK D RESET_B VGND VNB VPB VPWR Q Q_N
 M1000 a_38_78# D VPWR VPB pshort w=420000u l=150000u
@@ -70,4 +85,3 @@
 M1033 VGND RESET_B a_125_78# VNB nlowvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfrbp/sky130_fd_sc_hs__dfrbp_2.spice b/cells/dfrbp/sky130_fd_sc_hs__dfrbp_2.spice
index e8114d6..859be01 100644
--- a/cells/dfrbp/sky130_fd_sc_hs__dfrbp_2.spice
+++ b/cells/dfrbp/sky130_fd_sc_hs__dfrbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dfrbp_2 CLK D RESET_B VGND VNB VPB VPWR Q Q_N
 M1000 Q a_2363_352# VGND VNB nlowvt w=740000u l=150000u
@@ -78,4 +93,3 @@
 M1037 a_1586_149# a_728_331# a_331_392# VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfrtn/sky130_fd_sc_hs__dfrtn_1.spice b/cells/dfrtn/sky130_fd_sc_hs__dfrtn_1.spice
index ff15fde..34f55ac 100644
--- a/cells/dfrtn/sky130_fd_sc_hs__dfrtn_1.spice
+++ b/cells/dfrtn/sky130_fd_sc_hs__dfrtn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dfrtn_1 CLK_N D RESET_B VGND VNB VPB VPWR Q
 M1000 VGND a_1598_93# a_1550_119# VNB nlowvt w=420000u l=150000u
@@ -66,4 +81,3 @@
 M1031 VPWR a_1266_119# a_1598_93# VPB pshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfrtp/sky130_fd_sc_hs__dfrtp_1.spice b/cells/dfrtp/sky130_fd_sc_hs__dfrtp_1.spice
index 37323a4..567d234 100644
--- a/cells/dfrtp/sky130_fd_sc_hs__dfrtp_1.spice
+++ b/cells/dfrtp/sky130_fd_sc_hs__dfrtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dfrtp_1 CLK D RESET_B VGND VNB VPB VPWR Q
 M1000 a_1518_203# RESET_B VPWR VPB pshort w=420000u l=150000u
@@ -66,4 +81,3 @@
 M1031 a_830_359# a_695_457# VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfrtp/sky130_fd_sc_hs__dfrtp_2.spice b/cells/dfrtp/sky130_fd_sc_hs__dfrtp_2.spice
index 483866e..3070bae 100644
--- a/cells/dfrtp/sky130_fd_sc_hs__dfrtp_2.spice
+++ b/cells/dfrtp/sky130_fd_sc_hs__dfrtp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dfrtp_2 CLK D RESET_B VGND VNB VPB VPWR Q
 M1000 VGND CLK a_306_74# VNB nlowvt w=740000u l=150000u
@@ -70,4 +85,3 @@
 M1033 VGND a_1921_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_hs__dfrtp_4.spice b/cells/dfrtp/sky130_fd_sc_hs__dfrtp_4.spice
index 43de3dd..6118b02 100644
--- a/cells/dfrtp/sky130_fd_sc_hs__dfrtp_4.spice
+++ b/cells/dfrtp/sky130_fd_sc_hs__dfrtp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dfrtp_4 CLK D RESET_B VGND VNB VPB VPWR Q
 M1000 VPWR a_1678_395# a_1627_493# VPB pshort w=420000u l=150000u
@@ -80,4 +95,3 @@
 M1038 Q a_2010_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_hs__dfsbp_1.spice b/cells/dfsbp/sky130_fd_sc_hs__dfsbp_1.spice
index 5c83404..a0c3c1a 100644
--- a/cells/dfsbp/sky130_fd_sc_hs__dfsbp_1.spice
+++ b/cells/dfsbp/sky130_fd_sc_hs__dfsbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dfsbp_1 CLK D SET_B VGND VNB VPB VPWR Q Q_N
 M1000 VPWR D a_27_80# VPB pshort w=420000u 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/dfsbp/sky130_fd_sc_hs__dfsbp_2.spice b/cells/dfsbp/sky130_fd_sc_hs__dfsbp_2.spice
index 6909913..3fde799 100644
--- a/cells/dfsbp/sky130_fd_sc_hs__dfsbp_2.spice
+++ b/cells/dfsbp/sky130_fd_sc_hs__dfsbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dfsbp_2 CLK D SET_B VGND VNB VPB VPWR Q Q_N
 M1000 VPWR D a_27_74# VPB pshort w=420000u l=150000u
@@ -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_hs__dfstp_1.spice b/cells/dfstp/sky130_fd_sc_hs__dfstp_1.spice
index db64e86..15da7f3 100644
--- a/cells/dfstp/sky130_fd_sc_hs__dfstp_1.spice
+++ b/cells/dfstp/sky130_fd_sc_hs__dfstp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dfstp_1 CLK D SET_B VGND VNB VPB VPWR Q
 M1000 a_1215_74# a_604_74# VGND VNB nlowvt w=640000u l=150000u
@@ -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_hs__dfstp_2.spice b/cells/dfstp/sky130_fd_sc_hs__dfstp_2.spice
index 4d608b6..58443b1 100644
--- a/cells/dfstp/sky130_fd_sc_hs__dfstp_2.spice
+++ b/cells/dfstp/sky130_fd_sc_hs__dfstp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dfstp_2 CLK D SET_B VGND VNB VPB VPWR Q
 M1000 VPWR D a_27_74# VPB pshort w=420000u l=150000u
@@ -70,4 +85,3 @@
 M1033 a_1566_92# a_1356_74# VPWR VPB pshort w=420000u l=150000u
 +  ad=1.239e+11p pd=1.43e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dfstp/sky130_fd_sc_hs__dfstp_4.spice b/cells/dfstp/sky130_fd_sc_hs__dfstp_4.spice
index 9e27ab0..bd5ab88 100644
--- a/cells/dfstp/sky130_fd_sc_hs__dfstp_4.spice
+++ b/cells/dfstp/sky130_fd_sc_hs__dfstp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dfstp_4 CLK D SET_B VGND VNB VPB VPWR Q
 M1000 VGND a_1321_392# a_1940_74# VNB nlowvt w=740000u l=150000u
@@ -80,4 +95,3 @@
 M1038 VPWR CLK a_225_74# VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=3.304e+11p ps=2.83e+06u
 .ends
-
diff --git a/cells/dfxbp/sky130_fd_sc_hs__dfxbp_1.spice b/cells/dfxbp/sky130_fd_sc_hs__dfxbp_1.spice
index 5e92d9a..c424569 100644
--- a/cells/dfxbp/sky130_fd_sc_hs__dfxbp_1.spice
+++ b/cells/dfxbp/sky130_fd_sc_hs__dfxbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dfxbp_1 CLK D VGND VNB VPB VPWR Q Q_N
 M1000 a_701_463# a_543_447# VPWR VPB pshort w=840000u l=150000u
@@ -58,4 +73,3 @@
 M1027 VGND a_1191_120# a_1644_94# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=1.824e+11p ps=1.85e+06u
 .ends
-
diff --git a/cells/dfxbp/sky130_fd_sc_hs__dfxbp_2.spice b/cells/dfxbp/sky130_fd_sc_hs__dfxbp_2.spice
index af20a08..dae3e2b 100644
--- a/cells/dfxbp/sky130_fd_sc_hs__dfxbp_2.spice
+++ b/cells/dfxbp/sky130_fd_sc_hs__dfxbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dfxbp_2 CLK D VGND VNB VPB VPWR Q Q_N
 M1000 a_1000_424# a_27_74# a_753_284# VPB pshort w=840000u l=150000u
@@ -68,4 +83,3 @@
 M1032 VPWR a_1290_102# a_1208_479# VPB pshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfxtp/sky130_fd_sc_hs__dfxtp_1.spice b/cells/dfxtp/sky130_fd_sc_hs__dfxtp_1.spice
index 68dcd78..6ac0990 100644
--- a/cells/dfxtp/sky130_fd_sc_hs__dfxtp_1.spice
+++ b/cells/dfxtp/sky130_fd_sc_hs__dfxtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dfxtp_1 CLK D VGND VNB VPB VPWR Q
 M1000 Q a_1210_314# VPWR VPB pshort w=1.12e+06u l=150000u
@@ -50,4 +65,3 @@
 M1023 a_561_463# a_206_368# a_454_503# VPB pshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfxtp/sky130_fd_sc_hs__dfxtp_2.spice b/cells/dfxtp/sky130_fd_sc_hs__dfxtp_2.spice
index a079121..2304227 100644
--- a/cells/dfxtp/sky130_fd_sc_hs__dfxtp_2.spice
+++ b/cells/dfxtp/sky130_fd_sc_hs__dfxtp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 VPWR a_1217_314# Q VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dfxtp/sky130_fd_sc_hs__dfxtp_4.spice b/cells/dfxtp/sky130_fd_sc_hs__dfxtp_4.spice
index 977ef13..26fd05b 100644
--- a/cells/dfxtp/sky130_fd_sc_hs__dfxtp_4.spice
+++ b/cells/dfxtp/sky130_fd_sc_hs__dfxtp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dfxtp_4 CLK D VGND VNB VPB VPWR Q
 M1000 VGND a_1226_296# Q VNB nlowvt w=740000u l=150000u
@@ -64,4 +79,3 @@
 M1030 a_1178_124# a_27_74# a_1034_424# VNB nlowvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/diode/sky130_fd_sc_hs__diode_2.spice b/cells/diode/sky130_fd_sc_hs__diode_2.spice
index 689f01b..2a02324 100644
--- a/cells/diode/sky130_fd_sc_hs__diode_2.spice
+++ b/cells/diode/sky130_fd_sc_hs__diode_2.spice
@@ -1,6 +1,20 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__dlclkp_1.spice b/cells/dlclkp/sky130_fd_sc_hs__dlclkp_1.spice
index d4188f3..154278c 100644
--- a/cells/dlclkp/sky130_fd_sc_hs__dlclkp_1.spice
+++ b/cells/dlclkp/sky130_fd_sc_hs__dlclkp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dlclkp_1 CLK GATE VGND VNB VPB VPWR GCLK
 M1000 a_309_338# a_315_54# VPWR VPB pshort w=840000u l=150000u
@@ -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_hs__dlclkp_2.spice b/cells/dlclkp/sky130_fd_sc_hs__dlclkp_2.spice
index 8533913..1311711 100644
--- a/cells/dlclkp/sky130_fd_sc_hs__dlclkp_2.spice
+++ b/cells/dlclkp/sky130_fd_sc_hs__dlclkp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dlclkp_2 CLK GATE VGND VNB VPB VPWR GCLK
 M1000 a_264_392# GATE VPWR VPB pshort w=1e+06u l=150000u
@@ -46,4 +61,3 @@
 M1021 VPWR a_27_74# a_508_508# VPB pshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlclkp/sky130_fd_sc_hs__dlclkp_4.spice b/cells/dlclkp/sky130_fd_sc_hs__dlclkp_4.spice
index a9e9be9..7790a9a 100644
--- a/cells/dlclkp/sky130_fd_sc_hs__dlclkp_4.spice
+++ b/cells/dlclkp/sky130_fd_sc_hs__dlclkp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dlclkp_4 CLK GATE VGND VNB VPB VPWR GCLK
 M1000 VGND a_27_74# a_491_124# VNB nlowvt w=420000u l=150000u
@@ -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_hs__dlrbn_1.spice b/cells/dlrbn/sky130_fd_sc_hs__dlrbn_1.spice
index 29faa35..a2a74a0 100644
--- a/cells/dlrbn/sky130_fd_sc_hs__dlrbn_1.spice
+++ b/cells/dlrbn/sky130_fd_sc_hs__dlrbn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dlrbn_1 D GATE_N RESET_B VGND VNB VPB VPWR Q Q_N
 M1000 VPWR a_889_92# a_1437_112# VPB pshort w=840000u l=150000u
@@ -50,4 +65,3 @@
 M1023 Q_N a_1437_112# VPWR VPB pshort w=1.12e+06u l=150000u
 +  ad=3.304e+11p pd=2.83e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrbn/sky130_fd_sc_hs__dlrbn_2.spice b/cells/dlrbn/sky130_fd_sc_hs__dlrbn_2.spice
index a0447a2..df72d28 100644
--- a/cells/dlrbn/sky130_fd_sc_hs__dlrbn_2.spice
+++ b/cells/dlrbn/sky130_fd_sc_hs__dlrbn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dlrbn_2 D GATE_N RESET_B VGND VNB VPB VPWR Q Q_N
 M1000 a_1446_368# a_838_48# VPWR VPB pshort w=1e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 Q_N a_1446_368# VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrbp/sky130_fd_sc_hs__dlrbp_1.spice b/cells/dlrbp/sky130_fd_sc_hs__dlrbp_1.spice
index 78eca8d..97f1a3b 100644
--- a/cells/dlrbp/sky130_fd_sc_hs__dlrbp_1.spice
+++ b/cells/dlrbp/sky130_fd_sc_hs__dlrbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dlrbp_1 D GATE RESET_B VGND VNB VPB VPWR Q Q_N
 M1000 Q_N a_1342_74# VPWR VPB pshort w=1.12e+06u l=150000u
@@ -50,4 +65,3 @@
 M1023 Q_N a_1342_74# VGND VNB nlowvt w=740000u l=150000u
 +  ad=2.738e+11p pd=2.22e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrbp/sky130_fd_sc_hs__dlrbp_2.spice b/cells/dlrbp/sky130_fd_sc_hs__dlrbp_2.spice
index 047c569..9c86f53 100644
--- a/cells/dlrbp/sky130_fd_sc_hs__dlrbp_2.spice
+++ b/cells/dlrbp/sky130_fd_sc_hs__dlrbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dlrbp_2 D GATE RESET_B VGND VNB VPB VPWR Q Q_N
 M1000 a_757_508# a_363_82# a_641_80# VPB pshort w=420000u l=150000u
@@ -58,4 +73,3 @@
 M1027 VGND a_821_98# Q VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrtn/sky130_fd_sc_hs__dlrtn_1.spice b/cells/dlrtn/sky130_fd_sc_hs__dlrtn_1.spice
index 928d6a7..c0c6431 100644
--- a/cells/dlrtn/sky130_fd_sc_hs__dlrtn_1.spice
+++ b/cells/dlrtn/sky130_fd_sc_hs__dlrtn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dlrtn_1 D GATE_N RESET_B VGND VNB VPB VPWR Q
 M1000 VPWR D a_27_136# VPB pshort w=840000u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_570_392# a_27_136# VPWR VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrtn/sky130_fd_sc_hs__dlrtn_2.spice b/cells/dlrtn/sky130_fd_sc_hs__dlrtn_2.spice
index 7628aef..db34986 100644
--- a/cells/dlrtn/sky130_fd_sc_hs__dlrtn_2.spice
+++ b/cells/dlrtn/sky130_fd_sc_hs__dlrtn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dlrtn_2 D GATE_N RESET_B VGND VNB VPB VPWR Q
 M1000 a_232_98# GATE_N VPWR VPB pshort w=840000u l=150000u
@@ -46,4 +61,3 @@
 M1021 a_870_74# a_373_82# a_670_392# VNB nlowvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrtn/sky130_fd_sc_hs__dlrtn_4.spice b/cells/dlrtn/sky130_fd_sc_hs__dlrtn_4.spice
index e9904f6..ec5c495 100644
--- a/cells/dlrtn/sky130_fd_sc_hs__dlrtn_4.spice
+++ b/cells/dlrtn/sky130_fd_sc_hs__dlrtn_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dlrtn_4 D GATE_N RESET_B VGND VNB VPB VPWR Q
 M1000 VPWR a_888_406# a_747_504# VPB pshort w=420000u l=150000u
@@ -62,4 +77,3 @@
 M1029 a_232_98# GATE_N VPWR VPB pshort w=840000u l=150000u
 +  ad=2.478e+11p pd=2.27e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dlrtp/sky130_fd_sc_hs__dlrtp_1.spice b/cells/dlrtp/sky130_fd_sc_hs__dlrtp_1.spice
index a18bd5c..5a23240 100644
--- a/cells/dlrtp/sky130_fd_sc_hs__dlrtp_1.spice
+++ b/cells/dlrtp/sky130_fd_sc_hs__dlrtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dlrtp_1 D GATE RESET_B VGND VNB VPB VPWR Q
 M1000 a_568_392# a_27_424# VPWR VPB pshort w=1e+06u l=150000u
@@ -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_hs__dlrtp_2.spice b/cells/dlrtp/sky130_fd_sc_hs__dlrtp_2.spice
index 44170ee..a77e950 100644
--- a/cells/dlrtp/sky130_fd_sc_hs__dlrtp_2.spice
+++ b/cells/dlrtp/sky130_fd_sc_hs__dlrtp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dlrtp_2 D GATE RESET_B VGND VNB VPB VPWR Q
 M1000 a_646_74# a_235_74# a_565_392# VPB pshort w=1e+06u l=150000u
@@ -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_hs__dlrtp_4.spice b/cells/dlrtp/sky130_fd_sc_hs__dlrtp_4.spice
index c64e151..cc425d5 100644
--- a/cells/dlrtp/sky130_fd_sc_hs__dlrtp_4.spice
+++ b/cells/dlrtp/sky130_fd_sc_hs__dlrtp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dlrtp_4 D GATE RESET_B VGND VNB VPB VPWR Q
 M1000 a_938_74# a_640_74# a_797_48# VNB nlowvt w=640000u l=150000u
@@ -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_hs__dlxbn_1.spice b/cells/dlxbn/sky130_fd_sc_hs__dlxbn_1.spice
index 1e0bbc5..1ec9488 100644
--- a/cells/dlxbn/sky130_fd_sc_hs__dlxbn_1.spice
+++ b/cells/dlxbn/sky130_fd_sc_hs__dlxbn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dlxbn_1 D GATE_N VGND VNB VPB VPWR Q Q_N
 M1000 Q_N a_1347_424# VPWR VPB pshort w=1.12e+06u l=150000u
@@ -46,4 +61,3 @@
 M1021 a_1347_424# a_863_294# VPWR VPB pshort w=840000u l=150000u
 +  ad=2.478e+11p pd=2.27e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dlxbn/sky130_fd_sc_hs__dlxbn_2.spice b/cells/dlxbn/sky130_fd_sc_hs__dlxbn_2.spice
index efc363f..6f8a8c3 100644
--- a/cells/dlxbn/sky130_fd_sc_hs__dlxbn_2.spice
+++ b/cells/dlxbn/sky130_fd_sc_hs__dlxbn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dlxbn_2 D GATE_N VGND VNB VPB VPWR Q Q_N
 M1000 a_647_79# a_343_74# a_565_392# VPB pshort w=1e+06u l=150000u
@@ -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_hs__dlxbp_1.spice b/cells/dlxbp/sky130_fd_sc_hs__dlxbp_1.spice
index 4ea05a2..bf497db 100644
--- a/cells/dlxbp/sky130_fd_sc_hs__dlxbp_1.spice
+++ b/cells/dlxbp/sky130_fd_sc_hs__dlxbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dlxbp_1 D GATE VGND VNB VPB VPWR Q Q_N
 M1000 a_664_392# a_231_74# a_586_392# VPB pshort w=1e+06u l=150000u
@@ -46,4 +61,3 @@
 M1021 a_1347_424# a_863_98# VPWR VPB pshort w=840000u l=150000u
 +  ad=2.436e+11p pd=2.26e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dlxtn/sky130_fd_sc_hs__dlxtn_1.spice b/cells/dlxtn/sky130_fd_sc_hs__dlxtn_1.spice
index fad32e9..89fccff 100644
--- a/cells/dlxtn/sky130_fd_sc_hs__dlxtn_1.spice
+++ b/cells/dlxtn/sky130_fd_sc_hs__dlxtn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dlxtn_1 D GATE_N VGND VNB VPB VPWR Q
 M1000 a_217_419# GATE_N VPWR VPB pshort w=840000u l=150000u
@@ -38,4 +53,3 @@
 M1017 a_669_392# a_217_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_hs__dlxtn_2.spice b/cells/dlxtn/sky130_fd_sc_hs__dlxtn_2.spice
index 4ccb35f..82d0366 100644
--- a/cells/dlxtn/sky130_fd_sc_hs__dlxtn_2.spice
+++ b/cells/dlxtn/sky130_fd_sc_hs__dlxtn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 a_842_405# a_669_392# VPWR VPB pshort w=1.12e+06u l=150000u
 +  ad=3.304e+11p pd=2.83e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dlxtn/sky130_fd_sc_hs__dlxtn_4.spice b/cells/dlxtn/sky130_fd_sc_hs__dlxtn_4.spice
index 1454209..8981fce 100644
--- a/cells/dlxtn/sky130_fd_sc_hs__dlxtn_4.spice
+++ b/cells/dlxtn/sky130_fd_sc_hs__dlxtn_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dlxtn_4 D GATE_N VGND VNB VPB VPWR Q
 M1000 VPWR a_840_395# Q VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__dlxtp_1.spice b/cells/dlxtp/sky130_fd_sc_hs__dlxtp_1.spice
index 2266caa..f92cd8f 100644
--- a/cells/dlxtp/sky130_fd_sc_hs__dlxtp_1.spice
+++ b/cells/dlxtp/sky130_fd_sc_hs__dlxtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dlxtp_1 D GATE VGND VNB VPB VPWR Q
 M1000 VGND a_116_424# a_239_85# VNB nlowvt w=740000u l=150000u
@@ -38,4 +53,3 @@
 M1017 a_685_59# a_562_123# VPWR VPB pshort w=840000u l=150000u
 +  ad=2.478e+11p pd=2.27e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/dlygate4sd1/sky130_fd_sc_hs__dlygate4sd1_1.spice b/cells/dlygate4sd1/sky130_fd_sc_hs__dlygate4sd1_1.spice
index 917de24..13a0b59 100644
--- a/cells/dlygate4sd1/sky130_fd_sc_hs__dlygate4sd1_1.spice
+++ b/cells/dlygate4sd1/sky130_fd_sc_hs__dlygate4sd1_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__dlygate4sd2_1.spice b/cells/dlygate4sd2/sky130_fd_sc_hs__dlygate4sd2_1.spice
index 7185784..02bbcee 100644
--- a/cells/dlygate4sd2/sky130_fd_sc_hs__dlygate4sd2_1.spice
+++ b/cells/dlygate4sd2/sky130_fd_sc_hs__dlygate4sd2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dlygate4sd2_1 A VGND VNB VPB VPWR X
 M1000 X a_405_138# VPWR VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__dlygate4sd3_1.spice b/cells/dlygate4sd3/sky130_fd_sc_hs__dlygate4sd3_1.spice
index dd209ac..8953c05 100644
--- a/cells/dlygate4sd3/sky130_fd_sc_hs__dlygate4sd3_1.spice
+++ b/cells/dlygate4sd3/sky130_fd_sc_hs__dlygate4sd3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dlygate4sd3_1 A VGND VNB VPB VPWR X
 M1000 a_289_74# a_28_74# VGND VNB nlowvt w=420000u l=180000u
@@ -18,4 +33,3 @@
 M1007 VPWR A a_28_74# VPB pshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.176e+11p ps=1.4e+06u
 .ends
-
diff --git a/cells/dlymetal6s2s/sky130_fd_sc_hs__dlymetal6s2s_1.spice b/cells/dlymetal6s2s/sky130_fd_sc_hs__dlymetal6s2s_1.spice
index b7900eb..56f9f41 100644
--- a/cells/dlymetal6s2s/sky130_fd_sc_hs__dlymetal6s2s_1.spice
+++ b/cells/dlymetal6s2s/sky130_fd_sc_hs__dlymetal6s2s_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dlymetal6s2s_1 A VGND VNB VPB VPWR X
 M1000 VGND a_497_74# a_604_138# VNB nlowvt w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VPWR X a_316_138# VPB pshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.155e+11p ps=1.39e+06u
 .ends
-
diff --git a/cells/dlymetal6s4s/sky130_fd_sc_hs__dlymetal6s4s_1.spice b/cells/dlymetal6s4s/sky130_fd_sc_hs__dlymetal6s4s_1.spice
index 240fb12..c6b6004 100644
--- a/cells/dlymetal6s4s/sky130_fd_sc_hs__dlymetal6s4s_1.spice
+++ b/cells/dlymetal6s4s/sky130_fd_sc_hs__dlymetal6s4s_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dlymetal6s4s_1 A VGND VNB VPB VPWR X
 M1000 VGND X a_604_138# VNB nlowvt w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VPWR a_209_74# a_316_138# VPB pshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.155e+11p ps=1.39e+06u
 .ends
-
diff --git a/cells/dlymetal6s6s/sky130_fd_sc_hs__dlymetal6s6s_1.spice b/cells/dlymetal6s6s/sky130_fd_sc_hs__dlymetal6s6s_1.spice
index 0ded6d0..fd6319e 100644
--- a/cells/dlymetal6s6s/sky130_fd_sc_hs__dlymetal6s6s_1.spice
+++ b/cells/dlymetal6s6s/sky130_fd_sc_hs__dlymetal6s6s_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__dlymetal6s6s_1 A VGND VNB VPB VPWR X
 M1000 VGND a_497_74# a_604_138# VNB nlowvt w=420000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VPWR a_209_74# a_316_138# VPB pshort w=420000u l=150000u
 +  ad=0p pd=0u as=1.155e+11p ps=1.39e+06u
 .ends
-
diff --git a/cells/ebufn/sky130_fd_sc_hs__ebufn_1.spice b/cells/ebufn/sky130_fd_sc_hs__ebufn_1.spice
index a1acef0..5a87484 100644
--- a/cells/ebufn/sky130_fd_sc_hs__ebufn_1.spice
+++ b/cells/ebufn/sky130_fd_sc_hs__ebufn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__ebufn_1 A TE_B VGND VNB VPB VPWR Z
 M1000 a_229_74# A VPWR VPB pshort w=840000u l=150000u
@@ -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_hs__ebufn_2.spice b/cells/ebufn/sky130_fd_sc_hs__ebufn_2.spice
index f6d79ac..96e2059 100644
--- a/cells/ebufn/sky130_fd_sc_hs__ebufn_2.spice
+++ b/cells/ebufn/sky130_fd_sc_hs__ebufn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__ebufn_2 A TE_B VGND VNB VPB VPWR Z
 M1000 a_33_368# TE_B VPWR VPB pshort w=1.12e+06u 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_hs__ebufn_4.spice b/cells/ebufn/sky130_fd_sc_hs__ebufn_4.spice
index 593ce5d..9cc0402 100644
--- a/cells/ebufn/sky130_fd_sc_hs__ebufn_4.spice
+++ b/cells/ebufn/sky130_fd_sc_hs__ebufn_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__ebufn_4 A TE_B VGND VNB VPB VPWR Z
 M1000 a_348_368# TE_B VPWR VPB pshort w=1.12e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 Z a_27_368# a_378_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/ebufn/sky130_fd_sc_hs__ebufn_8.spice b/cells/ebufn/sky130_fd_sc_hs__ebufn_8.spice
index 08d4331..f5e4e3b 100644
--- a/cells/ebufn/sky130_fd_sc_hs__ebufn_8.spice
+++ b/cells/ebufn/sky130_fd_sc_hs__ebufn_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__ebufn_8 A TE_B VGND VNB VPB VPWR Z
 M1000 a_84_48# A VPWR VPB pshort w=1.12e+06u 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_hs__edfxbp_1.spice b/cells/edfxbp/sky130_fd_sc_hs__edfxbp_1.spice
index e2e4c6b..0b03d96 100644
--- a/cells/edfxbp/sky130_fd_sc_hs__edfxbp_1.spice
+++ b/cells/edfxbp/sky130_fd_sc_hs__edfxbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__edfxbp_1 CLK D DE VGND VNB VPB VPWR Q Q_N
 M1000 a_116_508# D a_27_74# VPB pshort w=420000u l=150000u
@@ -74,4 +89,3 @@
 M1035 VPWR a_1879_74# Q VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=3.304e+11p ps=2.83e+06u
 .ends
-
diff --git a/cells/edfxtp/sky130_fd_sc_hs__edfxtp_1.spice b/cells/edfxtp/sky130_fd_sc_hs__edfxtp_1.spice
index c998bdd..bb90262 100644
--- a/cells/edfxtp/sky130_fd_sc_hs__edfxtp_1.spice
+++ b/cells/edfxtp/sky130_fd_sc_hs__edfxtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__edfxtp_1 CLK D DE VGND VNB VPB VPWR Q
 M1000 a_1156_90# a_958_74# a_27_508# VPB pshort w=420000u l=150000u
@@ -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_hs__einvn_1.spice b/cells/einvn/sky130_fd_sc_hs__einvn_1.spice
index c7f3189..27c2dbf 100644
--- a/cells/einvn/sky130_fd_sc_hs__einvn_1.spice
+++ b/cells/einvn/sky130_fd_sc_hs__einvn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__einvn_1 A TE_B VGND VNB VPB VPWR Z
 M1000 a_278_368# TE_B VPWR VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__einvn_2.spice b/cells/einvn/sky130_fd_sc_hs__einvn_2.spice
index e3fc393..5f93241 100644
--- a/cells/einvn/sky130_fd_sc_hs__einvn_2.spice
+++ b/cells/einvn/sky130_fd_sc_hs__einvn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__einvn_2 A TE_B VGND VNB VPB VPWR Z
 M1000 VGND a_115_464# a_231_74# VNB nlowvt w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_115_464# 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_hs__einvn_4.spice b/cells/einvn/sky130_fd_sc_hs__einvn_4.spice
index 133fdbf..e917c5f 100644
--- a/cells/einvn/sky130_fd_sc_hs__einvn_4.spice
+++ b/cells/einvn/sky130_fd_sc_hs__einvn_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__einvn_4 A TE_B VGND VNB VPB VPWR Z
 M1000 a_114_74# TE_B VPWR VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__einvn_8.spice b/cells/einvn/sky130_fd_sc_hs__einvn_8.spice
index 4aacb3b..ed55389 100644
--- a/cells/einvn/sky130_fd_sc_hs__einvn_8.spice
+++ b/cells/einvn/sky130_fd_sc_hs__einvn_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__einvn_8 A TE_B VGND VNB VPB VPWR Z
 M1000 VPWR TE_B a_239_368# VPB pshort w=1.12e+06u l=150000u
@@ -70,4 +85,3 @@
 M1033 VPWR TE_B a_239_368# VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/einvp/sky130_fd_sc_hs__einvp_1.spice b/cells/einvp/sky130_fd_sc_hs__einvp_1.spice
index 4c40716..9f57ed2 100644
--- a/cells/einvp/sky130_fd_sc_hs__einvp_1.spice
+++ b/cells/einvp/sky130_fd_sc_hs__einvp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__einvp_1 A TE VGND VNB VPB VPWR Z
 M1000 VPWR TE a_44_549# VPB pshort w=420000u l=150000u
@@ -14,4 +29,3 @@
 M1005 Z A a_310_392# VPB pshort w=1e+06u l=150000u
 +  ad=2.95e+11p pd=2.59e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/einvp/sky130_fd_sc_hs__einvp_2.spice b/cells/einvp/sky130_fd_sc_hs__einvp_2.spice
index 112b87f..e766636 100644
--- a/cells/einvp/sky130_fd_sc_hs__einvp_2.spice
+++ b/cells/einvp/sky130_fd_sc_hs__einvp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__einvp_4.spice b/cells/einvp/sky130_fd_sc_hs__einvp_4.spice
index 6e0ca65..2bc72f1 100644
--- a/cells/einvp/sky130_fd_sc_hs__einvp_4.spice
+++ b/cells/einvp/sky130_fd_sc_hs__einvp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__einvp_4 A TE VGND VNB VPB VPWR Z
 M1000 a_27_368# a_473_323# VPWR VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__einvp_8.spice b/cells/einvp/sky130_fd_sc_hs__einvp_8.spice
index a552249..17e52cc 100644
--- a/cells/einvp/sky130_fd_sc_hs__einvp_8.spice
+++ b/cells/einvp/sky130_fd_sc_hs__einvp_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__einvp_8 A TE VGND VNB VPB VPWR Z
 M1000 VPWR a_802_323# a_27_368# VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__fa_1.spice b/cells/fa/sky130_fd_sc_hs__fa_1.spice
index 0626894..9ec78ed 100644
--- a/cells/fa/sky130_fd_sc_hs__fa_1.spice
+++ b/cells/fa/sky130_fd_sc_hs__fa_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__fa_1 A B CIN VGND VNB VPB VPWR COUT SUM
 M1000 a_916_347# A VPWR VPB pshort w=1e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 VGND a_69_260# SUM VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=2.109e+11p ps=2.05e+06u
 .ends
-
diff --git a/cells/fa/sky130_fd_sc_hs__fa_2.spice b/cells/fa/sky130_fd_sc_hs__fa_2.spice
index 3beb26a..74abfcf 100644
--- a/cells/fa/sky130_fd_sc_hs__fa_2.spice
+++ b/cells/fa/sky130_fd_sc_hs__fa_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__fa_2 A B CIN VGND VNB VPB VPWR COUT SUM
 M1000 VPWR A a_484_347# VPB pshort w=1e+06u l=150000u
@@ -66,4 +81,3 @@
 M1031 COUT a_336_347# VPWR VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fa/sky130_fd_sc_hs__fa_4.spice b/cells/fa/sky130_fd_sc_hs__fa_4.spice
index 21aaf80..b3ce3a3 100644
--- a/cells/fa/sky130_fd_sc_hs__fa_4.spice
+++ b/cells/fa/sky130_fd_sc_hs__fa_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__fa_4 A B CIN VGND VNB VPB VPWR COUT SUM
 M1000 a_1024_74# a_418_74# a_737_347# VPB pshort w=1e+06u l=150000u
@@ -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_hs__fah_1.spice b/cells/fah/sky130_fd_sc_hs__fah_1.spice
index 71338a3..f029989 100644
--- a/cells/fah/sky130_fd_sc_hs__fah_1.spice
+++ b/cells/fah/sky130_fd_sc_hs__fah_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__fah_1 A B CI VGND VNB VPB VPWR COUT SUM
 M1000 a_410_58# a_811_379# a_879_55# VNB nlowvt w=640000u l=150000u
@@ -66,4 +81,3 @@
 M1031 VPWR B a_879_55# VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fah/sky130_fd_sc_hs__fah_2.spice b/cells/fah/sky130_fd_sc_hs__fah_2.spice
index 9efbd56..03874d4 100644
--- a/cells/fah/sky130_fd_sc_hs__fah_2.spice
+++ b/cells/fah/sky130_fd_sc_hs__fah_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__fah_2 A B CI VGND VNB VPB VPWR COUT SUM
 M1000 a_481_379# B VPWR VPB pshort w=1.12e+06u l=150000u
@@ -74,4 +89,3 @@
 M1035 VGND a_1451_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_hs__fah_4.spice b/cells/fah/sky130_fd_sc_hs__fah_4.spice
index aaff03e..26be69a 100644
--- a/cells/fah/sky130_fd_sc_hs__fah_4.spice
+++ b/cells/fah/sky130_fd_sc_hs__fah_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__fah_4 A B CI VGND VNB VPB VPWR COUT SUM
 M1000 a_427_362# a_586_257# a_536_114# VPB pshort w=840000u l=150000u
@@ -90,4 +105,3 @@
 M1043 SUM a_1278_102# VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fahcin/sky130_fd_sc_hs__fahcin_1.spice b/cells/fahcin/sky130_fd_sc_hs__fahcin_1.spice
index aaf36c2..03c3ddd 100644
--- a/cells/fahcin/sky130_fd_sc_hs__fahcin_1.spice
+++ b/cells/fahcin/sky130_fd_sc_hs__fahcin_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__fahcin_1 A B CIN VGND VNB VPB VPWR COUT SUM
 M1000 a_256_368# a_28_74# VPWR VPB pshort w=1e+06u l=150000u
@@ -66,4 +81,3 @@
 M1031 a_430_418# B a_256_368# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/fahcon/sky130_fd_sc_hs__fahcon_1.spice b/cells/fahcon/sky130_fd_sc_hs__fahcon_1.spice
index 4ae5dc3..a643300 100644
--- a/cells/fahcon/sky130_fd_sc_hs__fahcon_1.spice
+++ b/cells/fahcon/sky130_fd_sc_hs__fahcon_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__fahcon_1 A B CI VGND VNB VPB VPWR COUT_N SUM
 M1000 a_241_368# a_27_100# VGND VNB nlowvt w=640000u l=150000u
@@ -66,4 +81,3 @@
 M1031 a_1023_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_hs__fill_1.spice b/cells/fill/sky130_fd_sc_hs__fill_1.spice
index 3b3229c..b303c07 100644
--- a/cells/fill/sky130_fd_sc_hs__fill_1.spice
+++ b/cells/fill/sky130_fd_sc_hs__fill_1.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__fill_1 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/fill/sky130_fd_sc_hs__fill_2.spice b/cells/fill/sky130_fd_sc_hs__fill_2.spice
index 8181e8c..a24f26e 100644
--- a/cells/fill/sky130_fd_sc_hs__fill_2.spice
+++ b/cells/fill/sky130_fd_sc_hs__fill_2.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__fill_2 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/fill/sky130_fd_sc_hs__fill_4.spice b/cells/fill/sky130_fd_sc_hs__fill_4.spice
index bafcc31..d4e035e 100644
--- a/cells/fill/sky130_fd_sc_hs__fill_4.spice
+++ b/cells/fill/sky130_fd_sc_hs__fill_4.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__fill_4 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/fill/sky130_fd_sc_hs__fill_8.spice b/cells/fill/sky130_fd_sc_hs__fill_8.spice
index f390df9..33fb376 100644
--- a/cells/fill/sky130_fd_sc_hs__fill_8.spice
+++ b/cells/fill/sky130_fd_sc_hs__fill_8.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__fill_8 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/fill_diode/sky130_fd_sc_hs__fill_diode_2.spice b/cells/fill_diode/sky130_fd_sc_hs__fill_diode_2.spice
index 726f0aa..fbb1a2f 100644
--- a/cells/fill_diode/sky130_fd_sc_hs__fill_diode_2.spice
+++ b/cells/fill_diode/sky130_fd_sc_hs__fill_diode_2.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__fill_diode_2 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/fill_diode/sky130_fd_sc_hs__fill_diode_4.spice b/cells/fill_diode/sky130_fd_sc_hs__fill_diode_4.spice
index a7cb92e..4c25875 100644
--- a/cells/fill_diode/sky130_fd_sc_hs__fill_diode_4.spice
+++ b/cells/fill_diode/sky130_fd_sc_hs__fill_diode_4.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__fill_diode_4 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/fill_diode/sky130_fd_sc_hs__fill_diode_8.spice b/cells/fill_diode/sky130_fd_sc_hs__fill_diode_8.spice
index 8a0d09a..9de8258 100644
--- a/cells/fill_diode/sky130_fd_sc_hs__fill_diode_8.spice
+++ b/cells/fill_diode/sky130_fd_sc_hs__fill_diode_8.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__fill_diode_8 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/ha/sky130_fd_sc_hs__ha_1.spice b/cells/ha/sky130_fd_sc_hs__ha_1.spice
index 5768616..5b76c37 100644
--- a/cells/ha/sky130_fd_sc_hs__ha_1.spice
+++ b/cells/ha/sky130_fd_sc_hs__ha_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__ha_1 A B VGND VNB VPB VPWR COUT SUM
 M1000 COUT a_239_294# VPWR VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__ha_2.spice b/cells/ha/sky130_fd_sc_hs__ha_2.spice
index 790378b..30834b4 100644
--- a/cells/ha/sky130_fd_sc_hs__ha_2.spice
+++ b/cells/ha/sky130_fd_sc_hs__ha_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__ha_2 A B VGND VNB VPB VPWR COUT SUM
 M1000 VPWR a_27_74# a_391_388# VPB pshort w=1e+06u l=150000u
@@ -38,4 +53,3 @@
 M1017 VPWR a_27_74# COUT VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/ha/sky130_fd_sc_hs__ha_4.spice b/cells/ha/sky130_fd_sc_hs__ha_4.spice
index 0f2174e..8f9bd32 100644
--- a/cells/ha/sky130_fd_sc_hs__ha_4.spice
+++ b/cells/ha/sky130_fd_sc_hs__ha_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__ha_4 A B VGND VNB VPB VPWR COUT SUM
 M1000 VPWR B a_435_99# VPB pshort w=840000u l=150000u
@@ -74,4 +89,3 @@
 M1035 SUM a_294_392# VPWR VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/inv/sky130_fd_sc_hs__inv_1.spice b/cells/inv/sky130_fd_sc_hs__inv_1.spice
index 1d9890d..8be3e9c 100644
--- a/cells/inv/sky130_fd_sc_hs__inv_1.spice
+++ b/cells/inv/sky130_fd_sc_hs__inv_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__inv_1 A VGND VNB VPB VPWR Y
 M1000 Y A VPWR VPB pshort w=1.12e+06u l=150000u
@@ -6,4 +21,3 @@
 M1001 Y A VGND VNB nlowvt w=740000u l=150000u
 +  ad=2.109e+11p pd=2.05e+06u as=2.627e+11p ps=2.19e+06u
 .ends
-
diff --git a/cells/inv/sky130_fd_sc_hs__inv_16.spice b/cells/inv/sky130_fd_sc_hs__inv_16.spice
index adcd8c2..ab6b334 100644
--- a/cells/inv/sky130_fd_sc_hs__inv_16.spice
+++ b/cells/inv/sky130_fd_sc_hs__inv_16.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__inv_16 A VGND VNB VPB VPWR Y
 M1000 VPWR A Y VPB pshort w=1.12e+06u l=150000u
@@ -66,4 +81,3 @@
 M1031 Y A VPWR VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/inv/sky130_fd_sc_hs__inv_2.spice b/cells/inv/sky130_fd_sc_hs__inv_2.spice
index 26c2bd3..d9e7887 100644
--- a/cells/inv/sky130_fd_sc_hs__inv_2.spice
+++ b/cells/inv/sky130_fd_sc_hs__inv_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__inv_2 A VGND VNB VPB VPWR Y
 M1000 Y A VPWR VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__inv_4.spice b/cells/inv/sky130_fd_sc_hs__inv_4.spice
index 7956337..c4a53d6 100644
--- a/cells/inv/sky130_fd_sc_hs__inv_4.spice
+++ b/cells/inv/sky130_fd_sc_hs__inv_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__inv_4 A VGND VNB VPB VPWR Y
 M1000 VGND A Y 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/inv/sky130_fd_sc_hs__inv_8.spice b/cells/inv/sky130_fd_sc_hs__inv_8.spice
index 3003ee8..5ca3d02 100644
--- a/cells/inv/sky130_fd_sc_hs__inv_8.spice
+++ b/cells/inv/sky130_fd_sc_hs__inv_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__maj3_1.spice b/cells/maj3/sky130_fd_sc_hs__maj3_1.spice
index 20d4de8..05cea35 100644
--- a/cells/maj3/sky130_fd_sc_hs__maj3_1.spice
+++ b/cells/maj3/sky130_fd_sc_hs__maj3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__maj3_1 A B C VGND VNB VPB VPWR X
 M1000 a_406_384# B a_84_74# VPB pshort w=1e+06u l=150000u
@@ -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_hs__maj3_2.spice b/cells/maj3/sky130_fd_sc_hs__maj3_2.spice
index dcb7dd2..259c671 100644
--- a/cells/maj3/sky130_fd_sc_hs__maj3_2.spice
+++ b/cells/maj3/sky130_fd_sc_hs__maj3_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__maj3_2 A B C VGND VNB VPB VPWR X
 M1000 a_790_368# A VPWR VPB pshort w=1e+06u l=150000u
@@ -34,4 +49,3 @@
 M1015 VPWR a_87_264# X VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/maj3/sky130_fd_sc_hs__maj3_4.spice b/cells/maj3/sky130_fd_sc_hs__maj3_4.spice
index d5e8f8b..bb06dde 100644
--- a/cells/maj3/sky130_fd_sc_hs__maj3_4.spice
+++ b/cells/maj3/sky130_fd_sc_hs__maj3_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__maj3_4 A B C VGND VNB VPB VPWR X
 M1000 VPWR a_219_392# X VPB pshort w=1.12e+06u l=150000u
@@ -66,4 +81,3 @@
 M1031 X a_219_392# VPWR VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2/sky130_fd_sc_hs__mux2_1.spice b/cells/mux2/sky130_fd_sc_hs__mux2_1.spice
index edc29e9..04ee263 100644
--- a/cells/mux2/sky130_fd_sc_hs__mux2_1.spice
+++ b/cells/mux2/sky130_fd_sc_hs__mux2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__mux2_1 A0 A1 S VGND VNB VPB VPWR X
 M1000 a_223_368# S VPWR VPB pshort w=1e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_524_368# A1 a_304_74# VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2/sky130_fd_sc_hs__mux2_2.spice b/cells/mux2/sky130_fd_sc_hs__mux2_2.spice
index 6cb857e..d25ab52 100644
--- a/cells/mux2/sky130_fd_sc_hs__mux2_2.spice
+++ b/cells/mux2/sky130_fd_sc_hs__mux2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__mux2_2 A0 A1 S VGND VNB VPB VPWR X
 M1000 X a_116_368# VPWR VPB pshort w=1.12e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 VGND a_116_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_hs__mux2_4.spice b/cells/mux2/sky130_fd_sc_hs__mux2_4.spice
index 0c563f0..60cca28 100644
--- a/cells/mux2/sky130_fd_sc_hs__mux2_4.spice
+++ b/cells/mux2/sky130_fd_sc_hs__mux2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__mux2_4 A0 A1 S VGND VNB VPB VPWR X
 M1000 VPWR a_27_368# a_936_391# VPB pshort w=1e+06u l=150000u
@@ -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_hs__mux2i_1.spice b/cells/mux2i/sky130_fd_sc_hs__mux2i_1.spice
index b2df5f8..729c5aa 100644
--- a/cells/mux2i/sky130_fd_sc_hs__mux2i_1.spice
+++ b/cells/mux2i/sky130_fd_sc_hs__mux2i_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__mux2i_1 A0 A1 S VGND VNB VPB VPWR Y
 M1000 Y A0 a_223_368# VPB pshort w=1.12e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND S a_225_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux2i/sky130_fd_sc_hs__mux2i_2.spice b/cells/mux2i/sky130_fd_sc_hs__mux2i_2.spice
index 9c2aa89..2c49158 100644
--- a/cells/mux2i/sky130_fd_sc_hs__mux2i_2.spice
+++ b/cells/mux2i/sky130_fd_sc_hs__mux2i_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__mux2i_2 A0 A1 S VGND VNB VPB VPWR Y
 M1000 a_118_368# A0 Y VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__mux2i_4.spice b/cells/mux2i/sky130_fd_sc_hs__mux2i_4.spice
index d6031fb..391095d 100644
--- a/cells/mux2i/sky130_fd_sc_hs__mux2i_4.spice
+++ b/cells/mux2i/sky130_fd_sc_hs__mux2i_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__mux4_1.spice b/cells/mux4/sky130_fd_sc_hs__mux4_1.spice
index 44f3635..458982d 100644
--- a/cells/mux4/sky130_fd_sc_hs__mux4_1.spice
+++ b/cells/mux4/sky130_fd_sc_hs__mux4_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__mux4_1 A0 A1 A2 A3 S0 S1 VGND VNB VPB VPWR X
 M1000 VGND A1 a_450_74# VNB nlowvt w=640000u l=150000u
@@ -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_hs__mux4_2.spice b/cells/mux4/sky130_fd_sc_hs__mux4_2.spice
index b5ee4c8..a942e55 100644
--- a/cells/mux4/sky130_fd_sc_hs__mux4_2.spice
+++ b/cells/mux4/sky130_fd_sc_hs__mux4_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__mux4_2 A0 A1 A2 A3 S0 S1 VGND VNB VPB VPWR X
 M1000 a_333_74# a_31_94# a_264_392# VPB pshort w=1e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 VPWR a_1429_74# X VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/mux4/sky130_fd_sc_hs__mux4_4.spice b/cells/mux4/sky130_fd_sc_hs__mux4_4.spice
index 81ae514..f53e244 100644
--- a/cells/mux4/sky130_fd_sc_hs__mux4_4.spice
+++ b/cells/mux4/sky130_fd_sc_hs__mux4_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__mux4_4 A0 A1 A2 A3 S0 S1 VGND VNB VPB VPWR X
 M1000 a_1278_121# a_758_306# a_1191_121# VNB nlowvt w=640000u l=150000u
@@ -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_hs__nand2_1.spice b/cells/nand2/sky130_fd_sc_hs__nand2_1.spice
index 177d25e..2720cbe 100644
--- a/cells/nand2/sky130_fd_sc_hs__nand2_1.spice
+++ b/cells/nand2/sky130_fd_sc_hs__nand2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nand2_1 A B VGND VNB VPB VPWR Y
 M1000 Y B VPWR VPB pshort w=1.12e+06u 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_hs__nand2_2.spice b/cells/nand2/sky130_fd_sc_hs__nand2_2.spice
index 98a327c..25917b7 100644
--- a/cells/nand2/sky130_fd_sc_hs__nand2_2.spice
+++ b/cells/nand2/sky130_fd_sc_hs__nand2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nand2_2 A B VGND VNB VPB VPWR Y
 M1000 Y A a_27_74# VNB nlowvt w=740000u l=150000u
@@ -18,4 +33,3 @@
 M1007 VPWR A Y VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand2/sky130_fd_sc_hs__nand2_4.spice b/cells/nand2/sky130_fd_sc_hs__nand2_4.spice
index 8cc73d3..f46f433 100644
--- a/cells/nand2/sky130_fd_sc_hs__nand2_4.spice
+++ b/cells/nand2/sky130_fd_sc_hs__nand2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nand2_4 A B VGND VNB VPB VPWR Y
 M1000 Y A VPWR VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__nand2_8.spice b/cells/nand2/sky130_fd_sc_hs__nand2_8.spice
index 46a9b31..bc72cd0 100644
--- a/cells/nand2/sky130_fd_sc_hs__nand2_8.spice
+++ b/cells/nand2/sky130_fd_sc_hs__nand2_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__nand2b_1.spice b/cells/nand2b/sky130_fd_sc_hs__nand2b_1.spice
index 1aa20cd..2c74df2 100644
--- a/cells/nand2b/sky130_fd_sc_hs__nand2b_1.spice
+++ b/cells/nand2b/sky130_fd_sc_hs__nand2b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_N a_27_112# VPB pshort w=840000u l=150000u
 +  ad=0p pd=0u as=2.478e+11p ps=2.27e+06u
 .ends
-
diff --git a/cells/nand2b/sky130_fd_sc_hs__nand2b_2.spice b/cells/nand2b/sky130_fd_sc_hs__nand2b_2.spice
index 44fabe0..128dcc8 100644
--- a/cells/nand2b/sky130_fd_sc_hs__nand2b_2.spice
+++ b/cells/nand2b/sky130_fd_sc_hs__nand2b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nand2b_2 A_N B VGND VNB VPB VPWR Y
 M1000 VGND B a_242_74# VNB nlowvt w=740000u l=150000u
@@ -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_hs__nand2b_4.spice b/cells/nand2b/sky130_fd_sc_hs__nand2b_4.spice
index 7d49570..fd10508 100644
--- a/cells/nand2b/sky130_fd_sc_hs__nand2b_4.spice
+++ b/cells/nand2b/sky130_fd_sc_hs__nand2b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 a_243_74# a_31_74# Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand3/sky130_fd_sc_hs__nand3_1.spice b/cells/nand3/sky130_fd_sc_hs__nand3_1.spice
index 6d8682d..ed53b2e 100644
--- a/cells/nand3/sky130_fd_sc_hs__nand3_1.spice
+++ b/cells/nand3/sky130_fd_sc_hs__nand3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 a_155_74# C VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=2.109e+11p ps=2.05e+06u
 .ends
-
diff --git a/cells/nand3/sky130_fd_sc_hs__nand3_2.spice b/cells/nand3/sky130_fd_sc_hs__nand3_2.spice
index 9c71846..ef809dc 100644
--- a/cells/nand3/sky130_fd_sc_hs__nand3_2.spice
+++ b/cells/nand3/sky130_fd_sc_hs__nand3_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__nand3_4.spice b/cells/nand3/sky130_fd_sc_hs__nand3_4.spice
index fd5afcb..3c60c00 100644
--- a/cells/nand3/sky130_fd_sc_hs__nand3_4.spice
+++ b/cells/nand3/sky130_fd_sc_hs__nand3_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__nand3b_1.spice b/cells/nand3b/sky130_fd_sc_hs__nand3b_1.spice
index 236a6eb..932e322 100644
--- a/cells/nand3b/sky130_fd_sc_hs__nand3b_1.spice
+++ b/cells/nand3b/sky130_fd_sc_hs__nand3b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nand3b_1 A_N B C VGND VNB VPB VPWR Y
 M1000 Y a_27_116# a_347_78# VNB nlowvt w=740000u l=150000u
@@ -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_hs__nand3b_2.spice b/cells/nand3b/sky130_fd_sc_hs__nand3b_2.spice
index 122198a..4124921 100644
--- a/cells/nand3b/sky130_fd_sc_hs__nand3b_2.spice
+++ b/cells/nand3b/sky130_fd_sc_hs__nand3b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nand3b_2 A_N B C VGND VNB VPB VPWR Y
 M1000 a_206_74# C VGND VNB nlowvt w=740000u l=150000u
@@ -30,4 +45,3 @@
 M1013 a_403_54# B a_206_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand3b/sky130_fd_sc_hs__nand3b_4.spice b/cells/nand3b/sky130_fd_sc_hs__nand3b_4.spice
index 246c6d4..8e8d040 100644
--- a/cells/nand3b/sky130_fd_sc_hs__nand3b_4.spice
+++ b/cells/nand3b/sky130_fd_sc_hs__nand3b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 a_744_74# a_89_172# Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4/sky130_fd_sc_hs__nand4_1.spice b/cells/nand4/sky130_fd_sc_hs__nand4_1.spice
index c16a897..770841c 100644
--- a/cells/nand4/sky130_fd_sc_hs__nand4_1.spice
+++ b/cells/nand4/sky130_fd_sc_hs__nand4_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__nand4_2.spice b/cells/nand4/sky130_fd_sc_hs__nand4_2.spice
index 92f97df..e807d16 100644
--- a/cells/nand4/sky130_fd_sc_hs__nand4_2.spice
+++ b/cells/nand4/sky130_fd_sc_hs__nand4_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nand4_2 A B C D VGND VNB VPB VPWR Y
 M1000 VPWR A Y VPB pshort w=1.12e+06u l=150000u
@@ -34,4 +49,3 @@
 M1015 Y A VPWR VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4/sky130_fd_sc_hs__nand4_4.spice b/cells/nand4/sky130_fd_sc_hs__nand4_4.spice
index 8c97255..20c7fc8 100644
--- a/cells/nand4/sky130_fd_sc_hs__nand4_4.spice
+++ b/cells/nand4/sky130_fd_sc_hs__nand4_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nand4_4 A B C D VGND VNB VPB VPWR Y
 M1000 VPWR C Y VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__nand4b_1.spice b/cells/nand4b/sky130_fd_sc_hs__nand4b_1.spice
index 8f512b0..cf6da62 100644
--- a/cells/nand4b/sky130_fd_sc_hs__nand4b_1.spice
+++ b/cells/nand4b/sky130_fd_sc_hs__nand4b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nand4b_1 A_N B C D VGND VNB VPB VPWR Y
 M1000 a_443_74# B a_341_74# VNB nlowvt w=740000u l=150000u
@@ -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_hs__nand4b_2.spice b/cells/nand4b/sky130_fd_sc_hs__nand4b_2.spice
index 0a2fb81..db0d6f6 100644
--- a/cells/nand4b/sky130_fd_sc_hs__nand4b_2.spice
+++ b/cells/nand4b/sky130_fd_sc_hs__nand4b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 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/nand4b/sky130_fd_sc_hs__nand4b_4.spice b/cells/nand4b/sky130_fd_sc_hs__nand4b_4.spice
index 2f63a6f..28700c5 100644
--- a/cells/nand4b/sky130_fd_sc_hs__nand4b_4.spice
+++ b/cells/nand4b/sky130_fd_sc_hs__nand4b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__nand4bb_1.spice b/cells/nand4bb/sky130_fd_sc_hs__nand4bb_1.spice
index 1a97429..ed2d106 100644
--- a/cells/nand4bb/sky130_fd_sc_hs__nand4bb_1.spice
+++ b/cells/nand4bb/sky130_fd_sc_hs__nand4bb_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nand4bb_1 A_N B_N C D VGND VNB VPB VPWR Y
 M1000 VPWR C Y VPB pshort w=1.12e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_226_398# B_N VPWR VPB pshort w=840000u l=150000u
 +  ad=2.478e+11p pd=2.27e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/nand4bb/sky130_fd_sc_hs__nand4bb_2.spice b/cells/nand4bb/sky130_fd_sc_hs__nand4bb_2.spice
index a2a3d3c..337a9f8 100644
--- a/cells/nand4bb/sky130_fd_sc_hs__nand4bb_2.spice
+++ b/cells/nand4bb/sky130_fd_sc_hs__nand4bb_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nand4bb_2 A_N B_N C D VGND VNB VPB VPWR Y
 M1000 a_373_74# a_231_74# a_678_74# VNB nlowvt w=740000u l=150000u
@@ -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_hs__nand4bb_4.spice b/cells/nand4bb/sky130_fd_sc_hs__nand4bb_4.spice
index f9a360a..19a237b 100644
--- a/cells/nand4bb/sky130_fd_sc_hs__nand4bb_4.spice
+++ b/cells/nand4bb/sky130_fd_sc_hs__nand4bb_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nand4bb_4 A_N B_N C D VGND VNB VPB VPWR Y
 M1000 a_374_74# a_27_114# Y VNB nlowvt w=740000u l=150000u
@@ -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_hs__nor2_1.spice b/cells/nor2/sky130_fd_sc_hs__nor2_1.spice
index 780d719..742b0ce 100644
--- a/cells/nor2/sky130_fd_sc_hs__nor2_1.spice
+++ b/cells/nor2/sky130_fd_sc_hs__nor2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nor2_1 A B VGND VNB VPB VPWR Y
 M1000 Y B a_116_368# VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__nor2_2.spice b/cells/nor2/sky130_fd_sc_hs__nor2_2.spice
index 57438bd..11a9ced 100644
--- a/cells/nor2/sky130_fd_sc_hs__nor2_2.spice
+++ b/cells/nor2/sky130_fd_sc_hs__nor2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nor2_2 A B VGND VNB VPB VPWR Y
 M1000 VPWR A a_35_368# VPB pshort w=1.12e+06u l=150000u
@@ -14,4 +29,3 @@
 M1005 a_35_368# B Y VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2/sky130_fd_sc_hs__nor2_4.spice b/cells/nor2/sky130_fd_sc_hs__nor2_4.spice
index 1df3062..355f11c 100644
--- a/cells/nor2/sky130_fd_sc_hs__nor2_4.spice
+++ b/cells/nor2/sky130_fd_sc_hs__nor2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nor2_4 A B VGND VNB VPB VPWR Y
 M1000 VGND A Y VNB nlowvt w=740000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_27_368# B Y VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2/sky130_fd_sc_hs__nor2_8.spice b/cells/nor2/sky130_fd_sc_hs__nor2_8.spice
index e6eef27..c899d82 100644
--- a/cells/nor2/sky130_fd_sc_hs__nor2_8.spice
+++ b/cells/nor2/sky130_fd_sc_hs__nor2_8.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nor2_8 A B VGND VNB VPB VPWR Y
 M1000 a_27_368# B Y VPB pshort w=1.12e+06u l=150000u
@@ -50,4 +65,3 @@
 M1023 Y B a_27_368# VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2b/sky130_fd_sc_hs__nor2b_1.spice b/cells/nor2b/sky130_fd_sc_hs__nor2b_1.spice
index b146831..8acde0d 100644
--- a/cells/nor2b/sky130_fd_sc_hs__nor2b_1.spice
+++ b/cells/nor2b/sky130_fd_sc_hs__nor2b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nor2b_1 A B_N VGND VNB VPB VPWR Y
 M1000 VPWR B_N a_27_112# VPB pshort w=840000u l=150000u
@@ -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_hs__nor2b_2.spice b/cells/nor2b/sky130_fd_sc_hs__nor2b_2.spice
index 412dd2f..872f1e3 100644
--- a/cells/nor2b/sky130_fd_sc_hs__nor2b_2.spice
+++ b/cells/nor2b/sky130_fd_sc_hs__nor2b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nor2b_2 A B_N VGND VNB VPB VPWR Y
 M1000 Y a_27_392# VGND VNB nlowvt w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND A Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor2b/sky130_fd_sc_hs__nor2b_4.spice b/cells/nor2b/sky130_fd_sc_hs__nor2b_4.spice
index f072ed8..2bda83c 100644
--- a/cells/nor2b/sky130_fd_sc_hs__nor2b_4.spice
+++ b/cells/nor2b/sky130_fd_sc_hs__nor2b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nor2b_4 A B_N VGND VNB VPB VPWR Y
 M1000 a_353_323# B_N VGND VNB nlowvt w=740000u l=150000u
@@ -32,4 +47,3 @@
 M1014 VPWR A a_116_368# VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor3/sky130_fd_sc_hs__nor3_1.spice b/cells/nor3/sky130_fd_sc_hs__nor3_1.spice
index cb89c9f..6676388 100644
--- a/cells/nor3/sky130_fd_sc_hs__nor3_1.spice
+++ b/cells/nor3/sky130_fd_sc_hs__nor3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nor3_1 A B C VGND VNB VPB VPWR Y
 M1000 Y C a_198_368# VPB pshort w=1.12e+06u l=150000u
@@ -14,4 +29,3 @@
 M1005 VGND B Y VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor3/sky130_fd_sc_hs__nor3_2.spice b/cells/nor3/sky130_fd_sc_hs__nor3_2.spice
index 91cdc90..34ea06f 100644
--- a/cells/nor3/sky130_fd_sc_hs__nor3_2.spice
+++ b/cells/nor3/sky130_fd_sc_hs__nor3_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nor3_2 A B C VGND VNB VPB VPWR Y
 M1000 a_27_368# C Y VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__nor3_4.spice b/cells/nor3/sky130_fd_sc_hs__nor3_4.spice
index 2638abe..c83ec36 100644
--- a/cells/nor3/sky130_fd_sc_hs__nor3_4.spice
+++ b/cells/nor3/sky130_fd_sc_hs__nor3_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nor3_4 A B C VGND VNB VPB VPWR Y
 M1000 a_295_368# C Y VPB pshort w=1.12e+06u l=150000u
@@ -38,4 +53,3 @@
 M1017 a_295_368# B a_27_368# VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor3b/sky130_fd_sc_hs__nor3b_1.spice b/cells/nor3b/sky130_fd_sc_hs__nor3b_1.spice
index b0b517a..badb81b 100644
--- a/cells/nor3b/sky130_fd_sc_hs__nor3b_1.spice
+++ b/cells/nor3b/sky130_fd_sc_hs__nor3b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__nor3b_2.spice b/cells/nor3b/sky130_fd_sc_hs__nor3b_2.spice
index 8840f29..b0d39cb 100644
--- a/cells/nor3b/sky130_fd_sc_hs__nor3b_2.spice
+++ b/cells/nor3b/sky130_fd_sc_hs__nor3b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 VPWR A a_495_368# VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor3b/sky130_fd_sc_hs__nor3b_4.spice b/cells/nor3b/sky130_fd_sc_hs__nor3b_4.spice
index 16a1c1e..102f3fd 100644
--- a/cells/nor3b/sky130_fd_sc_hs__nor3b_4.spice
+++ b/cells/nor3b/sky130_fd_sc_hs__nor3b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__nor4_1.spice b/cells/nor4/sky130_fd_sc_hs__nor4_1.spice
index d61771f..5bbc93d 100644
--- a/cells/nor4/sky130_fd_sc_hs__nor4_1.spice
+++ b/cells/nor4/sky130_fd_sc_hs__nor4_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nor4_1 A B C D VGND VNB VPB VPWR Y
 M1000 a_342_368# C a_228_368# VPB pshort w=1.12e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 Y D a_342_368# VPB pshort w=1.12e+06u l=150000u
 +  ad=3.304e+11p pd=2.83e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4/sky130_fd_sc_hs__nor4_2.spice b/cells/nor4/sky130_fd_sc_hs__nor4_2.spice
index b65e9f8..6096e6b 100644
--- a/cells/nor4/sky130_fd_sc_hs__nor4_2.spice
+++ b/cells/nor4/sky130_fd_sc_hs__nor4_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nor4_2 A B C D VGND VNB VPB VPWR Y
 M1000 a_116_368# D Y VPB pshort w=1.12e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 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_hs__nor4_4.spice b/cells/nor4/sky130_fd_sc_hs__nor4_4.spice
index 70c5554..58fa73c 100644
--- a/cells/nor4/sky130_fd_sc_hs__nor4_4.spice
+++ b/cells/nor4/sky130_fd_sc_hs__nor4_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nor4_4 A B C D VGND VNB VPB VPWR Y
 M1000 a_879_368# A VPWR VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__nor4b_1.spice b/cells/nor4b/sky130_fd_sc_hs__nor4b_1.spice
index 57f75f9..09e18ba 100644
--- a/cells/nor4b/sky130_fd_sc_hs__nor4b_1.spice
+++ b/cells/nor4b/sky130_fd_sc_hs__nor4b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nor4b_1 A B C D_N VGND VNB VPB VPWR Y
 M1000 a_446_368# C a_344_368# VPB pshort w=1.12e+06u 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_hs__nor4b_2.spice b/cells/nor4b/sky130_fd_sc_hs__nor4b_2.spice
index 4b5e410..6dfba50 100644
--- a/cells/nor4b/sky130_fd_sc_hs__nor4b_2.spice
+++ b/cells/nor4b/sky130_fd_sc_hs__nor4b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nor4b_2 A B C D_N VGND VNB VPB VPWR Y
 M1000 a_498_368# B a_701_368# VPB pshort w=1.12e+06u l=150000u
@@ -38,4 +53,3 @@
 M1017 Y a_27_392# a_229_368# VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4b/sky130_fd_sc_hs__nor4b_4.spice b/cells/nor4b/sky130_fd_sc_hs__nor4b_4.spice
index a238570..782865b 100644
--- a/cells/nor4b/sky130_fd_sc_hs__nor4b_4.spice
+++ b/cells/nor4b/sky130_fd_sc_hs__nor4b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nor4b_4 A B C D_N VGND VNB VPB VPWR Y
 M1000 Y a_47_88# a_319_368# VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__nor4bb_1.spice b/cells/nor4bb/sky130_fd_sc_hs__nor4bb_1.spice
index 0720b4c..e1cedae 100644
--- a/cells/nor4bb/sky130_fd_sc_hs__nor4bb_1.spice
+++ b/cells/nor4bb/sky130_fd_sc_hs__nor4bb_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nor4bb_1 A B C_N D_N VGND VNB VPB VPWR Y
 M1000 a_313_368# A VPWR VPB pshort w=1.12e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 Y A VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/nor4bb/sky130_fd_sc_hs__nor4bb_2.spice b/cells/nor4bb/sky130_fd_sc_hs__nor4bb_2.spice
index b34736b..22d5f94 100644
--- a/cells/nor4bb/sky130_fd_sc_hs__nor4bb_2.spice
+++ b/cells/nor4bb/sky130_fd_sc_hs__nor4bb_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__nor4bb_4.spice b/cells/nor4bb/sky130_fd_sc_hs__nor4bb_4.spice
index f239227..7765295 100644
--- a/cells/nor4bb/sky130_fd_sc_hs__nor4bb_4.spice
+++ b/cells/nor4bb/sky130_fd_sc_hs__nor4bb_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__nor4bb_4 A B C_N D_N VGND VNB VPB VPWR Y
 M1000 a_864_48# C_N VPWR VPB pshort w=840000u l=150000u
@@ -78,4 +93,3 @@
 M1037 a_27_368# a_864_48# a_897_349# VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2111a/sky130_fd_sc_hs__o2111a_1.spice b/cells/o2111a/sky130_fd_sc_hs__o2111a_1.spice
index 38b0ae6..3e28b79 100644
--- a/cells/o2111a/sky130_fd_sc_hs__o2111a_1.spice
+++ b/cells/o2111a/sky130_fd_sc_hs__o2111a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__o2111a_2.spice b/cells/o2111a/sky130_fd_sc_hs__o2111a_2.spice
index 77b8f65..9330bac 100644
--- a/cells/o2111a/sky130_fd_sc_hs__o2111a_2.spice
+++ b/cells/o2111a/sky130_fd_sc_hs__o2111a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o2111a_2 A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 a_152_368# A1 VPWR VPB pshort w=1e+06u l=150000u
@@ -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_hs__o2111a_4.spice b/cells/o2111a/sky130_fd_sc_hs__o2111a_4.spice
index 16eff16..2397dea 100644
--- a/cells/o2111a/sky130_fd_sc_hs__o2111a_4.spice
+++ b/cells/o2111a/sky130_fd_sc_hs__o2111a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o2111a_4 A1 A2 B1 C1 D1 VGND VNB VPB VPWR X
 M1000 a_747_392# A1 VPWR VPB pshort w=1e+06u l=150000u
@@ -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_hs__o2111ai_1.spice b/cells/o2111ai/sky130_fd_sc_hs__o2111ai_1.spice
index aea9cf4..9667333 100644
--- a/cells/o2111ai/sky130_fd_sc_hs__o2111ai_1.spice
+++ b/cells/o2111ai/sky130_fd_sc_hs__o2111ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o2111ai_1 A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 a_490_368# A2 Y VPB pshort w=1.12e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR A1 a_490_368# VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2111ai/sky130_fd_sc_hs__o2111ai_2.spice b/cells/o2111ai/sky130_fd_sc_hs__o2111ai_2.spice
index f5ef740..08cf65e 100644
--- a/cells/o2111ai/sky130_fd_sc_hs__o2111ai_2.spice
+++ b/cells/o2111ai/sky130_fd_sc_hs__o2111ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o2111ai_2 A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 VPWR C1 Y VPB pshort w=1.12e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 VPWR D1 Y VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2111ai/sky130_fd_sc_hs__o2111ai_4.spice b/cells/o2111ai/sky130_fd_sc_hs__o2111ai_4.spice
index 10d945a..721e199 100644
--- a/cells/o2111ai/sky130_fd_sc_hs__o2111ai_4.spice
+++ b/cells/o2111ai/sky130_fd_sc_hs__o2111ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o2111ai_4 A1 A2 B1 C1 D1 VGND VNB VPB VPWR Y
 M1000 a_27_74# C1 a_472_74# VNB nlowvt w=740000u l=150000u
@@ -70,4 +85,3 @@
 M1033 Y D1 a_27_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o211a/sky130_fd_sc_hs__o211a_1.spice b/cells/o211a/sky130_fd_sc_hs__o211a_1.spice
index 7826996..95d28d9 100644
--- a/cells/o211a/sky130_fd_sc_hs__o211a_1.spice
+++ b/cells/o211a/sky130_fd_sc_hs__o211a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o211a_1 A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 a_83_264# C1 a_662_136# VNB nlowvt w=640000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_83_264# C1 VPWR VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o211a/sky130_fd_sc_hs__o211a_2.spice b/cells/o211a/sky130_fd_sc_hs__o211a_2.spice
index baed413..de8d8c1 100644
--- a/cells/o211a/sky130_fd_sc_hs__o211a_2.spice
+++ b/cells/o211a/sky130_fd_sc_hs__o211a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__o211a_4.spice b/cells/o211a/sky130_fd_sc_hs__o211a_4.spice
index 105ee6e..c58cfaf 100644
--- a/cells/o211a/sky130_fd_sc_hs__o211a_4.spice
+++ b/cells/o211a/sky130_fd_sc_hs__o211a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o211a_4 A1 A2 B1 C1 VGND VNB VPB VPWR X
 M1000 VGND a_91_48# X VNB nlowvt w=740000u l=150000u
@@ -50,4 +65,3 @@
 M1023 a_510_125# A1 VGND VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o211ai/sky130_fd_sc_hs__o211ai_1.spice b/cells/o211ai/sky130_fd_sc_hs__o211ai_1.spice
index b4bda28..e45786f 100644
--- a/cells/o211ai/sky130_fd_sc_hs__o211ai_1.spice
+++ b/cells/o211ai/sky130_fd_sc_hs__o211ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o211ai_1 A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 Y A2 a_116_368# VPB pshort w=1.12e+06u 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_hs__o211ai_2.spice b/cells/o211ai/sky130_fd_sc_hs__o211ai_2.spice
index 4fb75ad..de42950 100644
--- a/cells/o211ai/sky130_fd_sc_hs__o211ai_2.spice
+++ b/cells/o211ai/sky130_fd_sc_hs__o211ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o211ai_2 A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 Y A2 a_505_368# VPB pshort w=1.12e+06u 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_hs__o211ai_4.spice b/cells/o211ai/sky130_fd_sc_hs__o211ai_4.spice
index 66f3f3b..86297d4 100644
--- a/cells/o211ai/sky130_fd_sc_hs__o211ai_4.spice
+++ b/cells/o211ai/sky130_fd_sc_hs__o211ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o211ai_4 A1 A2 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_30_368# A2 Y VPB pshort w=1.12e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 Y A2 a_30_368# VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21a/sky130_fd_sc_hs__o21a_1.spice b/cells/o21a/sky130_fd_sc_hs__o21a_1.spice
index 31e14a5..ad3ac8e 100644
--- a/cells/o21a/sky130_fd_sc_hs__o21a_1.spice
+++ b/cells/o21a/sky130_fd_sc_hs__o21a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o21a_1 A1 A2 B1 VGND VNB VPB VPWR X
 M1000 a_376_387# A2 a_83_244# VPB pshort w=1e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 VGND A2 a_320_74# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21a/sky130_fd_sc_hs__o21a_2.spice b/cells/o21a/sky130_fd_sc_hs__o21a_2.spice
index cb625a4..d3cb870 100644
--- a/cells/o21a/sky130_fd_sc_hs__o21a_2.spice
+++ b/cells/o21a/sky130_fd_sc_hs__o21a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o21a_2 A1 A2 B1 VGND VNB VPB VPWR X
 M1000 X a_244_368# VGND VNB nlowvt w=740000u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_244_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_hs__o21a_4.spice b/cells/o21a/sky130_fd_sc_hs__o21a_4.spice
index bf48f2f..51ea6aa 100644
--- a/cells/o21a/sky130_fd_sc_hs__o21a_4.spice
+++ b/cells/o21a/sky130_fd_sc_hs__o21a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o21a_4 A1 A2 B1 VGND VNB VPB VPWR X
 M1000 VPWR a_216_387# X VPB pshort w=1.12e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_116_387# A1 VPWR VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21ai/sky130_fd_sc_hs__o21ai_1.spice b/cells/o21ai/sky130_fd_sc_hs__o21ai_1.spice
index 0487e66..a6ff791 100644
--- a/cells/o21ai/sky130_fd_sc_hs__o21ai_1.spice
+++ b/cells/o21ai/sky130_fd_sc_hs__o21ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o21ai_1 A1 A2 B1 VGND VNB VPB VPWR Y
 M1000 Y A2 a_162_368# VPB pshort w=1.12e+06u l=150000u
@@ -14,4 +29,3 @@
 M1005 a_162_368# A1 VPWR VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21ai/sky130_fd_sc_hs__o21ai_2.spice b/cells/o21ai/sky130_fd_sc_hs__o21ai_2.spice
index ca2b922..89e6cc1 100644
--- a/cells/o21ai/sky130_fd_sc_hs__o21ai_2.spice
+++ b/cells/o21ai/sky130_fd_sc_hs__o21ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o21ai_2 A1 A2 B1 VGND VNB VPB VPWR Y
 M1000 Y B1 a_27_74# VNB nlowvt w=740000u l=150000u
@@ -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_hs__o21ai_4.spice b/cells/o21ai/sky130_fd_sc_hs__o21ai_4.spice
index f853101..8a0fec4 100644
--- a/cells/o21ai/sky130_fd_sc_hs__o21ai_4.spice
+++ b/cells/o21ai/sky130_fd_sc_hs__o21ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__o21ba_1.spice b/cells/o21ba/sky130_fd_sc_hs__o21ba_1.spice
index 242d1e1..2a5d95e 100644
--- a/cells/o21ba/sky130_fd_sc_hs__o21ba_1.spice
+++ b/cells/o21ba/sky130_fd_sc_hs__o21ba_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o21ba_1 A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 X a_200_392# VGND VNB nlowvt w=740000u l=150000u
@@ -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_hs__o21ba_2.spice b/cells/o21ba/sky130_fd_sc_hs__o21ba_2.spice
index e29eca7..cd8afb8 100644
--- a/cells/o21ba/sky130_fd_sc_hs__o21ba_2.spice
+++ b/cells/o21ba/sky130_fd_sc_hs__o21ba_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o21ba_2 A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 VPWR A1 a_582_368# VPB pshort w=1e+06u l=150000u
@@ -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_hs__o21ba_4.spice b/cells/o21ba/sky130_fd_sc_hs__o21ba_4.spice
index f6adeda..470865d 100644
--- a/cells/o21ba/sky130_fd_sc_hs__o21ba_4.spice
+++ b/cells/o21ba/sky130_fd_sc_hs__o21ba_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o21ba_4 A1 A2 B1_N VGND VNB VPB VPWR X
 M1000 a_193_48# a_27_368# VPWR VPB pshort w=840000u l=150000u
@@ -46,4 +61,3 @@
 M1021 VGND B1_N 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/o21bai/sky130_fd_sc_hs__o21bai_1.spice b/cells/o21bai/sky130_fd_sc_hs__o21bai_1.spice
index cfeeac5..2dda391 100644
--- a/cells/o21bai/sky130_fd_sc_hs__o21bai_1.spice
+++ b/cells/o21bai/sky130_fd_sc_hs__o21bai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o21bai_1 A1 A2 B1_N VGND VNB VPB VPWR Y
 M1000 VPWR B1_N a_27_74# VPB pshort w=840000u l=150000u
@@ -18,4 +33,3 @@
 M1007 a_395_368# A2 Y VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o21bai/sky130_fd_sc_hs__o21bai_2.spice b/cells/o21bai/sky130_fd_sc_hs__o21bai_2.spice
index b5dffdc..530f6d0 100644
--- a/cells/o21bai/sky130_fd_sc_hs__o21bai_2.spice
+++ b/cells/o21bai/sky130_fd_sc_hs__o21bai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o21bai_2 A1 A2 B1_N VGND VNB VPB VPWR Y
 M1000 VPWR A1 a_507_368# VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__o21bai_4.spice b/cells/o21bai/sky130_fd_sc_hs__o21bai_4.spice
index de0809f..54ac809 100644
--- a/cells/o21bai/sky130_fd_sc_hs__o21bai_4.spice
+++ b/cells/o21bai/sky130_fd_sc_hs__o21bai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o21bai_4 A1 A2 B1_N VGND VNB VPB VPWR Y
 M1000 VPWR a_828_48# Y VPB pshort w=1.12e+06u l=150000u
@@ -52,4 +67,3 @@
 M1024 Y a_828_48# VPWR VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o221a/sky130_fd_sc_hs__o221a_1.spice b/cells/o221a/sky130_fd_sc_hs__o221a_1.spice
index 1c1040c..f57e627 100644
--- a/cells/o221a/sky130_fd_sc_hs__o221a_1.spice
+++ b/cells/o221a/sky130_fd_sc_hs__o221a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_83_264# C1 VPWR VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o221a/sky130_fd_sc_hs__o221a_2.spice b/cells/o221a/sky130_fd_sc_hs__o221a_2.spice
index 6f13ecc..f6be2c8 100644
--- a/cells/o221a/sky130_fd_sc_hs__o221a_2.spice
+++ b/cells/o221a/sky130_fd_sc_hs__o221a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 C1 a_27_368# VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o221a/sky130_fd_sc_hs__o221a_4.spice b/cells/o221a/sky130_fd_sc_hs__o221a_4.spice
index e6a9053..6d61906 100644
--- a/cells/o221a/sky130_fd_sc_hs__o221a_4.spice
+++ b/cells/o221a/sky130_fd_sc_hs__o221a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o221a_4 A1 A2 B1 B2 C1 VGND VNB VPB VPWR X
 M1000 a_114_125# B2 a_297_387# VPB pshort w=1e+06u l=150000u
@@ -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_hs__o221ai_1.spice b/cells/o221ai/sky130_fd_sc_hs__o221ai_1.spice
index 60bf7a0..0507b0d 100644
--- a/cells/o221ai/sky130_fd_sc_hs__o221ai_1.spice
+++ b/cells/o221ai/sky130_fd_sc_hs__o221ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o221ai_1 A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 Y B2 a_324_368# VPB pshort w=1.12e+06u 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_hs__o221ai_2.spice b/cells/o221ai/sky130_fd_sc_hs__o221ai_2.spice
index 0a25890..6e05b1d 100644
--- a/cells/o221ai/sky130_fd_sc_hs__o221ai_2.spice
+++ b/cells/o221ai/sky130_fd_sc_hs__o221ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o221ai_2 A1 A2 B1 B2 C1 VGND VNB VPB VPWR Y
 M1000 VPWR A1 a_776_368# VPB pshort w=1.12e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 VPWR C1 Y VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o221ai/sky130_fd_sc_hs__o221ai_4.spice b/cells/o221ai/sky130_fd_sc_hs__o221ai_4.spice
index 5352894..303e89c 100644
--- a/cells/o221ai/sky130_fd_sc_hs__o221ai_4.spice
+++ b/cells/o221ai/sky130_fd_sc_hs__o221ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 a_508_368# B1 VPWR VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o22a/sky130_fd_sc_hs__o22a_1.spice b/cells/o22a/sky130_fd_sc_hs__o22a_1.spice
index ca3b005..373b4a7 100644
--- a/cells/o22a/sky130_fd_sc_hs__o22a_1.spice
+++ b/cells/o22a/sky130_fd_sc_hs__o22a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__o22a_2.spice b/cells/o22a/sky130_fd_sc_hs__o22a_2.spice
index 281f4ea..2dd65d7 100644
--- a/cells/o22a/sky130_fd_sc_hs__o22a_2.spice
+++ b/cells/o22a/sky130_fd_sc_hs__o22a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o22a_2 A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 a_82_48# B2 a_383_384# VPB pshort w=1e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_383_384# B1 VPWR VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o22a/sky130_fd_sc_hs__o22a_4.spice b/cells/o22a/sky130_fd_sc_hs__o22a_4.spice
index e23fdba..5291592 100644
--- a/cells/o22a/sky130_fd_sc_hs__o22a_4.spice
+++ b/cells/o22a/sky130_fd_sc_hs__o22a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o22a_4 A1 A2 B1 B2 VGND VNB VPB VPWR X
 M1000 VPWR a_206_392# X VPB pshort w=1.12e+06u l=150000u
@@ -50,4 +65,3 @@
 M1023 a_206_392# B1 a_27_136# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o22ai/sky130_fd_sc_hs__o22ai_1.spice b/cells/o22ai/sky130_fd_sc_hs__o22ai_1.spice
index 48a569d..cf794b8 100644
--- a/cells/o22ai/sky130_fd_sc_hs__o22ai_1.spice
+++ b/cells/o22ai/sky130_fd_sc_hs__o22ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o22ai_1 A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_142_368# B1 VPWR VPB pshort w=1.12e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 Y B1 a_27_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o22ai/sky130_fd_sc_hs__o22ai_2.spice b/cells/o22ai/sky130_fd_sc_hs__o22ai_2.spice
index aec5f1a..905204d 100644
--- a/cells/o22ai/sky130_fd_sc_hs__o22ai_2.spice
+++ b/cells/o22ai/sky130_fd_sc_hs__o22ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o22ai_2 A1 A2 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_510_368# A1 VPWR VPB pshort w=1.12e+06u l=150000u
@@ -34,4 +49,3 @@
 M1015 VPWR A1 a_510_368# VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o22ai/sky130_fd_sc_hs__o22ai_4.spice b/cells/o22ai/sky130_fd_sc_hs__o22ai_4.spice
index c62c7cd..6b6df6f 100644
--- a/cells/o22ai/sky130_fd_sc_hs__o22ai_4.spice
+++ b/cells/o22ai/sky130_fd_sc_hs__o22ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__o2bb2a_1.spice b/cells/o2bb2a/sky130_fd_sc_hs__o2bb2a_1.spice
index f5a0795..2848904 100644
--- a/cells/o2bb2a/sky130_fd_sc_hs__o2bb2a_1.spice
+++ b/cells/o2bb2a/sky130_fd_sc_hs__o2bb2a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o2bb2a_1 A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 VPWR A2_N a_233_384# VPB pshort w=840000u l=150000u
@@ -26,4 +41,3 @@
 M1011 VPWR B1 a_693_384# VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2bb2a/sky130_fd_sc_hs__o2bb2a_2.spice b/cells/o2bb2a/sky130_fd_sc_hs__o2bb2a_2.spice
index de7aa60..01f649f 100644
--- a/cells/o2bb2a/sky130_fd_sc_hs__o2bb2a_2.spice
+++ b/cells/o2bb2a/sky130_fd_sc_hs__o2bb2a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o2bb2a_2 A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 VPWR a_270_48# a_201_392# VPB pshort w=1e+06u l=150000u
@@ -30,4 +45,3 @@
 M1013 VGND a_201_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_hs__o2bb2a_4.spice b/cells/o2bb2a/sky130_fd_sc_hs__o2bb2a_4.spice
index e3b9d79..674445b 100644
--- a/cells/o2bb2a/sky130_fd_sc_hs__o2bb2a_4.spice
+++ b/cells/o2bb2a/sky130_fd_sc_hs__o2bb2a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o2bb2a_4 A1_N A2_N B1 B2 VGND VNB VPB VPWR X
 M1000 X a_310_392# VGND VNB nlowvt w=740000u l=150000u
@@ -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_hs__o2bb2ai_1.spice b/cells/o2bb2ai/sky130_fd_sc_hs__o2bb2ai_1.spice
index 3c7baf4..823bf5c 100644
--- a/cells/o2bb2ai/sky130_fd_sc_hs__o2bb2ai_1.spice
+++ b/cells/o2bb2ai/sky130_fd_sc_hs__o2bb2ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o2bb2ai_1 A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 a_490_368# B2 Y VPB pshort w=1.12e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 Y a_131_383# VPWR VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2bb2ai/sky130_fd_sc_hs__o2bb2ai_2.spice b/cells/o2bb2ai/sky130_fd_sc_hs__o2bb2ai_2.spice
index b7bcb62..d49cc16 100644
--- a/cells/o2bb2ai/sky130_fd_sc_hs__o2bb2ai_2.spice
+++ b/cells/o2bb2ai/sky130_fd_sc_hs__o2bb2ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o2bb2ai_2 A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 Y a_133_387# a_518_74# VNB nlowvt w=740000u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_134_74# A2_N a_133_387# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o2bb2ai/sky130_fd_sc_hs__o2bb2ai_4.spice b/cells/o2bb2ai/sky130_fd_sc_hs__o2bb2ai_4.spice
index 14b18d7..5a9c26d 100644
--- a/cells/o2bb2ai/sky130_fd_sc_hs__o2bb2ai_4.spice
+++ b/cells/o2bb2ai/sky130_fd_sc_hs__o2bb2ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o2bb2ai_4 A1_N A2_N B1 B2 VGND VNB VPB VPWR Y
 M1000 VGND B2 a_857_74# VNB nlowvt w=740000u l=150000u
@@ -82,4 +97,3 @@
 M1039 a_27_74# A2_N a_114_368# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o311a/sky130_fd_sc_hs__o311a_1.spice b/cells/o311a/sky130_fd_sc_hs__o311a_1.spice
index 42f657c..76af351 100644
--- a/cells/o311a/sky130_fd_sc_hs__o311a_1.spice
+++ b/cells/o311a/sky130_fd_sc_hs__o311a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o311a_1 A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 a_31_387# B1 VPWR VPB pshort w=1e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 VPWR A1 a_536_387# VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o311a/sky130_fd_sc_hs__o311a_2.spice b/cells/o311a/sky130_fd_sc_hs__o311a_2.spice
index edb552d..6f7cfb1 100644
--- a/cells/o311a/sky130_fd_sc_hs__o311a_2.spice
+++ b/cells/o311a/sky130_fd_sc_hs__o311a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_32_74# B1 VPWR VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o311a/sky130_fd_sc_hs__o311a_4.spice b/cells/o311a/sky130_fd_sc_hs__o311a_4.spice
index c4cc03e..7b66eb2 100644
--- a/cells/o311a/sky130_fd_sc_hs__o311a_4.spice
+++ b/cells/o311a/sky130_fd_sc_hs__o311a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o311a_4 A1 A2 A3 B1 C1 VGND VNB VPB VPWR X
 M1000 X a_83_244# VGND VNB nlowvt w=740000u l=150000u
@@ -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_hs__o311ai_1.spice b/cells/o311ai/sky130_fd_sc_hs__o311ai_1.spice
index b0dbf2d..42b2fdd 100644
--- a/cells/o311ai/sky130_fd_sc_hs__o311ai_1.spice
+++ b/cells/o311ai/sky130_fd_sc_hs__o311ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o311ai_1 A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 Y A3 a_222_368# VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__o311ai_2.spice b/cells/o311ai/sky130_fd_sc_hs__o311ai_2.spice
index d7a77fa..804e5b0 100644
--- a/cells/o311ai/sky130_fd_sc_hs__o311ai_2.spice
+++ b/cells/o311ai/sky130_fd_sc_hs__o311ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o311ai_2 A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 a_27_74# A1 VGND VNB nlowvt w=740000u l=150000u
@@ -42,4 +57,3 @@
 M1019 VGND A1 a_27_74# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o311ai/sky130_fd_sc_hs__o311ai_4.spice b/cells/o311ai/sky130_fd_sc_hs__o311ai_4.spice
index e4f9195..14f1d27 100644
--- a/cells/o311ai/sky130_fd_sc_hs__o311ai_4.spice
+++ b/cells/o311ai/sky130_fd_sc_hs__o311ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o311ai_4 A1 A2 A3 B1 C1 VGND VNB VPB VPWR Y
 M1000 VGND A1 a_459_74# VNB nlowvt w=740000u l=150000u
@@ -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_hs__o31a_1.spice b/cells/o31a/sky130_fd_sc_hs__o31a_1.spice
index ae1c5a0..024cff9 100644
--- a/cells/o31a/sky130_fd_sc_hs__o31a_1.spice
+++ b/cells/o31a/sky130_fd_sc_hs__o31a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o31a_1 A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 a_256_368# A1 VPWR VPB pshort w=1e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 VGND a_84_48# X VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=2.109e+11p ps=2.05e+06u
 .ends
-
diff --git a/cells/o31a/sky130_fd_sc_hs__o31a_2.spice b/cells/o31a/sky130_fd_sc_hs__o31a_2.spice
index 21ee398..7bf4b9f 100644
--- a/cells/o31a/sky130_fd_sc_hs__o31a_2.spice
+++ b/cells/o31a/sky130_fd_sc_hs__o31a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o31a_2 A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 VGND A2 a_328_74# VNB nlowvt w=740000u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_328_74# A1 VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o31a/sky130_fd_sc_hs__o31a_4.spice b/cells/o31a/sky130_fd_sc_hs__o31a_4.spice
index e788bbb..8cb3e9d 100644
--- a/cells/o31a/sky130_fd_sc_hs__o31a_4.spice
+++ b/cells/o31a/sky130_fd_sc_hs__o31a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o31a_4 A1 A2 A3 B1 VGND VNB VPB VPWR X
 M1000 a_968_392# A2 a_699_392# VPB pshort w=1e+06u l=150000u
@@ -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_hs__o31ai_1.spice b/cells/o31ai/sky130_fd_sc_hs__o31ai_1.spice
index 549eb44..cbefa4b 100644
--- a/cells/o31ai/sky130_fd_sc_hs__o31ai_1.spice
+++ b/cells/o31ai/sky130_fd_sc_hs__o31ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o31ai_1 A1 A2 A3 B1 VGND VNB VPB VPWR Y
 M1000 Y A3 a_203_368# VPB pshort w=1.12e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 VPWR B1 Y VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o31ai/sky130_fd_sc_hs__o31ai_2.spice b/cells/o31ai/sky130_fd_sc_hs__o31ai_2.spice
index baa3a36..e9fab8f 100644
--- a/cells/o31ai/sky130_fd_sc_hs__o31ai_2.spice
+++ b/cells/o31ai/sky130_fd_sc_hs__o31ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o31ai_2 A1 A2 A3 B1 VGND VNB VPB VPWR Y
 M1000 a_297_368# A3 Y VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__o31ai_4.spice b/cells/o31ai/sky130_fd_sc_hs__o31ai_4.spice
index 54ecd58..22c5bd6 100644
--- a/cells/o31ai/sky130_fd_sc_hs__o31ai_4.spice
+++ b/cells/o31ai/sky130_fd_sc_hs__o31ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 a_27_82# A1 VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o32a/sky130_fd_sc_hs__o32a_1.spice b/cells/o32a/sky130_fd_sc_hs__o32a_1.spice
index 4ea5a1c..0cdcc33 100644
--- a/cells/o32a/sky130_fd_sc_hs__o32a_1.spice
+++ b/cells/o32a/sky130_fd_sc_hs__o32a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o32a_1 A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 a_332_368# A2 a_248_368# VPB pshort w=1e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_251_74# A1 VGND VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o32a/sky130_fd_sc_hs__o32a_2.spice b/cells/o32a/sky130_fd_sc_hs__o32a_2.spice
index 2bc50f6..5c8c8c8 100644
--- a/cells/o32a/sky130_fd_sc_hs__o32a_2.spice
+++ b/cells/o32a/sky130_fd_sc_hs__o32a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o32a_2 A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 a_346_368# A1 VPWR VPB pshort w=1e+06u l=150000u
@@ -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_hs__o32a_4.spice b/cells/o32a/sky130_fd_sc_hs__o32a_4.spice
index f6b0e34..4bb4eac 100644
--- a/cells/o32a/sky130_fd_sc_hs__o32a_4.spice
+++ b/cells/o32a/sky130_fd_sc_hs__o32a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o32a_4 A1 A2 A3 B1 B2 VGND VNB VPB VPWR X
 M1000 a_564_74# A3 VGND VNB nlowvt w=640000u l=150000u
@@ -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_hs__o32ai_1.spice b/cells/o32ai/sky130_fd_sc_hs__o32ai_1.spice
index f70d1e6..ba35272 100644
--- a/cells/o32ai/sky130_fd_sc_hs__o32ai_1.spice
+++ b/cells/o32ai/sky130_fd_sc_hs__o32ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o32ai_1 A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_128_368# B1 VPWR VPB pshort w=1.12e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 a_456_368# A2 a_342_368# VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o32ai/sky130_fd_sc_hs__o32ai_2.spice b/cells/o32ai/sky130_fd_sc_hs__o32ai_2.spice
index e02f7ca..05d2713 100644
--- a/cells/o32ai/sky130_fd_sc_hs__o32ai_2.spice
+++ b/cells/o32ai/sky130_fd_sc_hs__o32ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o32ai_2 A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 VPWR A1 a_768_368# VPB pshort w=1.12e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_27_74# A2 VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o32ai/sky130_fd_sc_hs__o32ai_4.spice b/cells/o32ai/sky130_fd_sc_hs__o32ai_4.spice
index a9e2db6..904b3f3 100644
--- a/cells/o32ai/sky130_fd_sc_hs__o32ai_4.spice
+++ b/cells/o32ai/sky130_fd_sc_hs__o32ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o32ai_4 A1 A2 A3 B1 B2 VGND VNB VPB VPWR Y
 M1000 a_1330_368# A1 VPWR VPB pshort w=1.12e+06u 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_hs__o41a_1.spice b/cells/o41a/sky130_fd_sc_hs__o41a_1.spice
index 209af52..c258e0e 100644
--- a/cells/o41a/sky130_fd_sc_hs__o41a_1.spice
+++ b/cells/o41a/sky130_fd_sc_hs__o41a_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o41a_1 A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 a_527_368# A3 a_443_368# VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__o41a_2.spice b/cells/o41a/sky130_fd_sc_hs__o41a_2.spice
index e93ce9f..3990473 100644
--- a/cells/o41a/sky130_fd_sc_hs__o41a_2.spice
+++ b/cells/o41a/sky130_fd_sc_hs__o41a_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o41a_2 A1 A2 A3 A4 B1 VGND VNB VPB VPWR X
 M1000 VPWR B1 a_428_368# VPB pshort w=1e+06u 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_hs__o41a_4.spice b/cells/o41a/sky130_fd_sc_hs__o41a_4.spice
index f5fddac..a3b9f99 100644
--- a/cells/o41a/sky130_fd_sc_hs__o41a_4.spice
+++ b/cells/o41a/sky130_fd_sc_hs__o41a_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__o41ai_1.spice b/cells/o41ai/sky130_fd_sc_hs__o41ai_1.spice
index 587e8b1..82bd085 100644
--- a/cells/o41ai/sky130_fd_sc_hs__o41ai_1.spice
+++ b/cells/o41ai/sky130_fd_sc_hs__o41ai_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__o41ai_2.spice b/cells/o41ai/sky130_fd_sc_hs__o41ai_2.spice
index dbb09d1..a26b6be 100644
--- a/cells/o41ai/sky130_fd_sc_hs__o41ai_2.spice
+++ b/cells/o41ai/sky130_fd_sc_hs__o41ai_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o41ai_2 A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 a_607_368# A2 a_807_368# VPB pshort w=1.12e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 Y A4 a_314_368# VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/o41ai/sky130_fd_sc_hs__o41ai_4.spice b/cells/o41ai/sky130_fd_sc_hs__o41ai_4.spice
index 062857f..bfca76b 100644
--- a/cells/o41ai/sky130_fd_sc_hs__o41ai_4.spice
+++ b/cells/o41ai/sky130_fd_sc_hs__o41ai_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__o41ai_4 A1 A2 A3 A4 B1 VGND VNB VPB VPWR Y
 M1000 Y A4 a_339_368# VPB pshort w=1.12e+06u 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_hs__or2_1.spice b/cells/or2/sky130_fd_sc_hs__or2_1.spice
index 51316d3..135ec5d 100644
--- a/cells/or2/sky130_fd_sc_hs__or2_1.spice
+++ b/cells/or2/sky130_fd_sc_hs__or2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__or2_1 A B VGND VNB VPB VPWR X
 M1000 a_152_368# B a_63_368# VPB pshort w=840000u l=150000u
@@ -14,4 +29,3 @@
 M1005 a_63_368# B VGND VNB nlowvt w=550000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or2/sky130_fd_sc_hs__or2_2.spice b/cells/or2/sky130_fd_sc_hs__or2_2.spice
index 9ebc423..36458c5 100644
--- a/cells/or2/sky130_fd_sc_hs__or2_2.spice
+++ b/cells/or2/sky130_fd_sc_hs__or2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__or2_2 A B VGND VNB VPB VPWR X
 M1000 X a_27_368# VPWR VPB pshort w=1.12e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 X a_27_368# VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or2/sky130_fd_sc_hs__or2_4.spice b/cells/or2/sky130_fd_sc_hs__or2_4.spice
index eb30b35..abe7f9e 100644
--- a/cells/or2/sky130_fd_sc_hs__or2_4.spice
+++ b/cells/or2/sky130_fd_sc_hs__or2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__or2b_1.spice b/cells/or2b/sky130_fd_sc_hs__or2b_1.spice
index 368370d..e86d9cb 100644
--- a/cells/or2b/sky130_fd_sc_hs__or2b_1.spice
+++ b/cells/or2b/sky130_fd_sc_hs__or2b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__or2b_2.spice b/cells/or2b/sky130_fd_sc_hs__or2b_2.spice
index 55534f5..3053196 100644
--- a/cells/or2b/sky130_fd_sc_hs__or2b_2.spice
+++ b/cells/or2b/sky130_fd_sc_hs__or2b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__or2b_2 A B_N VGND VNB VPB VPWR X
 M1000 X a_187_48# VPWR VPB pshort w=1.12e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR a_187_48# X VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or2b/sky130_fd_sc_hs__or2b_4.spice b/cells/or2b/sky130_fd_sc_hs__or2b_4.spice
index c8f15ff..6d0a881 100644
--- a/cells/or2b/sky130_fd_sc_hs__or2b_4.spice
+++ b/cells/or2b/sky130_fd_sc_hs__or2b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__or2b_4 A B_N VGND VNB VPB VPWR X
 M1000 X a_81_296# VPWR VPB pshort w=1.12e+06u 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_hs__or3_1.spice b/cells/or3/sky130_fd_sc_hs__or3_1.spice
index 4143e01..4f99e67 100644
--- a/cells/or3/sky130_fd_sc_hs__or3_1.spice
+++ b/cells/or3/sky130_fd_sc_hs__or3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__or3_1 A B C VGND VNB VPB VPWR X
 M1000 a_200_368# B a_116_368# VPB pshort w=1e+06u l=150000u
@@ -18,4 +33,3 @@
 M1007 VPWR A a_200_368# VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or3/sky130_fd_sc_hs__or3_2.spice b/cells/or3/sky130_fd_sc_hs__or3_2.spice
index 64ea910..b566318 100644
--- a/cells/or3/sky130_fd_sc_hs__or3_2.spice
+++ b/cells/or3/sky130_fd_sc_hs__or3_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__or3_4.spice b/cells/or3/sky130_fd_sc_hs__or3_4.spice
index 165f597..932f5e7 100644
--- a/cells/or3/sky130_fd_sc_hs__or3_4.spice
+++ b/cells/or3/sky130_fd_sc_hs__or3_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__or3_4 A B C VGND VNB VPB VPWR X
 M1000 VPWR a_302_388# X VPB pshort w=1.12e+06u l=150000u
@@ -36,4 +51,3 @@
 M1016 a_206_388# C a_302_388# VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or3b/sky130_fd_sc_hs__or3b_1.spice b/cells/or3b/sky130_fd_sc_hs__or3b_1.spice
index f717e8a..b4f9535 100644
--- a/cells/or3b/sky130_fd_sc_hs__or3b_1.spice
+++ b/cells/or3b/sky130_fd_sc_hs__or3b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 VPWR A a_452_391# VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or3b/sky130_fd_sc_hs__or3b_2.spice b/cells/or3b/sky130_fd_sc_hs__or3b_2.spice
index 21a3e02..dce79cd 100644
--- a/cells/or3b/sky130_fd_sc_hs__or3b_2.spice
+++ b/cells/or3b/sky130_fd_sc_hs__or3b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__or3b_2 A B C_N VGND VNB VPB VPWR X
 M1000 a_542_368# B a_458_368# VPB pshort w=1e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 VGND a_190_260# X VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or3b/sky130_fd_sc_hs__or3b_4.spice b/cells/or3b/sky130_fd_sc_hs__or3b_4.spice
index 22e6dbd..c0b8de9 100644
--- a/cells/or3b/sky130_fd_sc_hs__or3b_4.spice
+++ b/cells/or3b/sky130_fd_sc_hs__or3b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__or3b_4 A B C_N VGND VNB VPB VPWR X
 M1000 a_217_392# A VPWR VPB pshort w=1e+06u l=150000u
@@ -40,4 +55,3 @@
 M1018 VGND a_409_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_hs__or4_1.spice b/cells/or4/sky130_fd_sc_hs__or4_1.spice
index 8282e04..a8610dc 100644
--- a/cells/or4/sky130_fd_sc_hs__or4_1.spice
+++ b/cells/or4/sky130_fd_sc_hs__or4_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__or4_1 A B C D VGND VNB VPB VPWR X
 M1000 a_217_392# C a_133_392# VPB pshort w=1e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 X a_44_392# VGND VNB nlowvt w=740000u l=150000u
 +  ad=2.109e+11p pd=2.05e+06u as=0p ps=0u
 .ends
-
diff --git a/cells/or4/sky130_fd_sc_hs__or4_2.spice b/cells/or4/sky130_fd_sc_hs__or4_2.spice
index 3bd44db..c825e51 100644
--- a/cells/or4/sky130_fd_sc_hs__or4_2.spice
+++ b/cells/or4/sky130_fd_sc_hs__or4_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__or4_2 A B C D VGND VNB VPB VPWR X
 M1000 X a_85_392# VPWR VPB pshort w=1.12e+06u l=150000u
@@ -26,4 +41,3 @@
 M1011 a_342_392# B a_258_392# VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4/sky130_fd_sc_hs__or4_4.spice b/cells/or4/sky130_fd_sc_hs__or4_4.spice
index 98bc950..38a9835 100644
--- a/cells/or4/sky130_fd_sc_hs__or4_4.spice
+++ b/cells/or4/sky130_fd_sc_hs__or4_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__or4_4 A B C D VGND VNB VPB VPWR X
 M1000 VPWR A a_588_392# VPB pshort w=1e+06u l=150000u
@@ -42,4 +57,3 @@
 M1019 a_588_392# B a_499_392# VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/or4b/sky130_fd_sc_hs__or4b_1.spice b/cells/or4b/sky130_fd_sc_hs__or4b_1.spice
index 152130a..4af0853 100644
--- a/cells/or4b/sky130_fd_sc_hs__or4b_1.spice
+++ b/cells/or4b/sky130_fd_sc_hs__or4b_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__or4b_1 A B C D_N VGND VNB VPB VPWR X
 M1000 VPWR A a_524_368# VPB pshort w=1e+06u 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_hs__or4b_2.spice b/cells/or4b/sky130_fd_sc_hs__or4b_2.spice
index f5810d9..538a07d 100644
--- a/cells/or4b/sky130_fd_sc_hs__or4b_2.spice
+++ b/cells/or4b/sky130_fd_sc_hs__or4b_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__or4b_2 A B C D_N VGND VNB VPB VPWR X
 M1000 X a_190_48# VPWR VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__or4b_4.spice b/cells/or4b/sky130_fd_sc_hs__or4b_4.spice
index f7c3d3a..b5d83cb 100644
--- a/cells/or4b/sky130_fd_sc_hs__or4b_4.spice
+++ b/cells/or4b/sky130_fd_sc_hs__or4b_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__or4b_4 A B C D_N VGND VNB VPB VPWR X
 M1000 X a_27_74# VPWR VPB pshort w=1.12e+06u 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_hs__or4bb_1.spice b/cells/or4bb/sky130_fd_sc_hs__or4bb_1.spice
index 03474c0..8a236e7 100644
--- a/cells/or4bb/sky130_fd_sc_hs__or4bb_1.spice
+++ b/cells/or4bb/sky130_fd_sc_hs__or4bb_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__or4bb_1 A B C_N D_N VGND VNB VPB VPWR X
 M1000 X a_357_378# VPWR VPB pshort w=1.12e+06u 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_hs__or4bb_2.spice b/cells/or4bb/sky130_fd_sc_hs__or4bb_2.spice
index c2eb2d0..3e82bea 100644
--- a/cells/or4bb/sky130_fd_sc_hs__or4bb_2.spice
+++ b/cells/or4bb/sky130_fd_sc_hs__or4bb_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 a_503_392# a_27_424# a_182_270# VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=2.85e+11p ps=2.57e+06u
 .ends
-
diff --git a/cells/or4bb/sky130_fd_sc_hs__or4bb_4.spice b/cells/or4bb/sky130_fd_sc_hs__or4bb_4.spice
index c3ee3ca..b197e6d 100644
--- a/cells/or4bb/sky130_fd_sc_hs__or4bb_4.spice
+++ b/cells/or4bb/sky130_fd_sc_hs__or4bb_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__or4bb_4 A B C_N D_N VGND VNB VPB VPWR X
 M1000 VGND a_193_277# X VNB nlowvt w=740000u l=150000u
@@ -50,4 +65,3 @@
 M1023 VPWR a_193_277# X VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfbbn/sky130_fd_sc_hs__sdfbbn_1.spice b/cells/sdfbbn/sky130_fd_sc_hs__sdfbbn_1.spice
index 81124d4..2e7c5a5 100644
--- a/cells/sdfbbn/sky130_fd_sc_hs__sdfbbn_1.spice
+++ b/cells/sdfbbn/sky130_fd_sc_hs__sdfbbn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__sdfbbn_1 CLK_N D RESET_B SCD SCE SET_B VGND VNB VPB VPWR
 + Q Q_N
@@ -99,4 +114,3 @@
 M1047 a_1434_78# a_1579_258# a_977_243# VNB nlowvt w=550000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfbbn/sky130_fd_sc_hs__sdfbbn_2.spice b/cells/sdfbbn/sky130_fd_sc_hs__sdfbbn_2.spice
index 69bb33d..abc356b 100644
--- a/cells/sdfbbn/sky130_fd_sc_hs__sdfbbn_2.spice
+++ b/cells/sdfbbn/sky130_fd_sc_hs__sdfbbn_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_hs__sdfbbp_1.spice b/cells/sdfbbp/sky130_fd_sc_hs__sdfbbp_1.spice
index f1cf27f..2f43b6a 100644
--- a/cells/sdfbbp/sky130_fd_sc_hs__sdfbbp_1.spice
+++ b/cells/sdfbbp/sky130_fd_sc_hs__sdfbbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__sdfbbp_1 CLK D RESET_B SCD SCE SET_B VGND VNB VPB VPWR Q
 + Q_N
@@ -99,4 +114,3 @@
 M1047 a_2271_74# a_1625_93# a_2037_442# VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfrbp/sky130_fd_sc_hs__sdfrbp_1.spice b/cells/sdfrbp/sky130_fd_sc_hs__sdfrbp_1.spice
index 28ccfa8..41d74b3 100644
--- a/cells/sdfrbp/sky130_fd_sc_hs__sdfrbp_1.spice
+++ b/cells/sdfrbp/sky130_fd_sc_hs__sdfrbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__sdfrbp_1 CLK D RESET_B SCD SCE VGND VNB VPB VPWR Q Q_N
 M1000 a_413_90# D a_312_90# VNB nlowvt w=420000u l=150000u
@@ -86,4 +101,3 @@
 M1041 a_1369_71# a_1221_97# VGND VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfrbp/sky130_fd_sc_hs__sdfrbp_2.spice b/cells/sdfrbp/sky130_fd_sc_hs__sdfrbp_2.spice
index 885dec1..c23708f 100644
--- a/cells/sdfrbp/sky130_fd_sc_hs__sdfrbp_2.spice
+++ b/cells/sdfrbp/sky130_fd_sc_hs__sdfrbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__sdfrbp_2 CLK D RESET_B SCD SCE VGND VNB VPB VPWR Q Q_N
 M1000 a_1223_118# a_1025_74# a_388_79# VPB pshort w=420000u l=150000u
@@ -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_hs__sdfrtn_1.spice b/cells/sdfrtn/sky130_fd_sc_hs__sdfrtn_1.spice
index 4e84e35..287a1a3 100644
--- a/cells/sdfrtn/sky130_fd_sc_hs__sdfrtn_1.spice
+++ b/cells/sdfrtn/sky130_fd_sc_hs__sdfrtn_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__sdfrtn_1 CLK_N D RESET_B SCD SCE VGND VNB VPB VPWR Q
 M1000 a_1827_144# a_1074_88# a_1429_308# VPB pshort w=1e+06u l=150000u
@@ -82,4 +97,3 @@
 M1039 a_1827_144# a_854_74# a_1429_308# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfrtp/sky130_fd_sc_hs__sdfrtp_1.spice b/cells/sdfrtp/sky130_fd_sc_hs__sdfrtp_1.spice
index ca1cdb4..a87bd4b 100644
--- a/cells/sdfrtp/sky130_fd_sc_hs__sdfrtp_1.spice
+++ b/cells/sdfrtp/sky130_fd_sc_hs__sdfrtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__sdfrtp_1 CLK D RESET_B SCD SCE VGND VNB VPB VPWR Q
 M1000 a_1319_118# a_1034_368# a_1233_118# VNB nlowvt w=420000u l=150000u
@@ -82,4 +97,3 @@
 M1039 a_300_464# RESET_B VPWR VPB pshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfrtp/sky130_fd_sc_hs__sdfrtp_2.spice b/cells/sdfrtp/sky130_fd_sc_hs__sdfrtp_2.spice
index 19d79e9..7c938ee 100644
--- a/cells/sdfrtp/sky130_fd_sc_hs__sdfrtp_2.spice
+++ b/cells/sdfrtp/sky130_fd_sc_hs__sdfrtp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__sdfrtp_2 CLK D RESET_B SCD SCE VGND VNB VPB VPWR Q
 M1000 VPWR a_1383_349# a_1332_457# VPB pshort w=420000u l=150000u
@@ -86,4 +101,3 @@
 M1041 a_390_81# RESET_B VPWR VPB pshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfrtp/sky130_fd_sc_hs__sdfrtp_4.spice b/cells/sdfrtp/sky130_fd_sc_hs__sdfrtp_4.spice
index 8cf5736..ce5ba83 100644
--- a/cells/sdfrtp/sky130_fd_sc_hs__sdfrtp_4.spice
+++ b/cells/sdfrtp/sky130_fd_sc_hs__sdfrtp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__sdfrtp_4 CLK D RESET_B SCD SCE VGND VNB VPB VPWR Q
 M1000 a_1367_112# a_1233_138# VPWR VPB pshort w=1e+06u l=150000u
@@ -96,4 +111,3 @@
 M1046 a_1233_138# a_1034_74# a_415_81# VPB pshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfsbp/sky130_fd_sc_hs__sdfsbp_1.spice b/cells/sdfsbp/sky130_fd_sc_hs__sdfsbp_1.spice
index 2f80938..597fe74 100644
--- a/cells/sdfsbp/sky130_fd_sc_hs__sdfsbp_1.spice
+++ b/cells/sdfsbp/sky130_fd_sc_hs__sdfsbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__sdfsbp_1 CLK D SCD SCE SET_B VGND VNB VPB VPWR Q Q_N
 M1000 a_1411_74# a_995_74# a_1163_48# VNB nlowvt w=420000u l=150000u
@@ -86,4 +101,3 @@
 M1041 a_1762_74# SET_B VPWR VPB pshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfsbp/sky130_fd_sc_hs__sdfsbp_2.spice b/cells/sdfsbp/sky130_fd_sc_hs__sdfsbp_2.spice
index 7fe98c4..7a4bafb 100644
--- a/cells/sdfsbp/sky130_fd_sc_hs__sdfsbp_2.spice
+++ b/cells/sdfsbp/sky130_fd_sc_hs__sdfsbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__sdfsbp_2 CLK D SCD SCE SET_B VGND VNB VPB VPWR Q Q_N
 M1000 VGND a_3177_368# Q VNB nlowvt w=740000u l=150000u
@@ -102,4 +117,3 @@
 M1049 VPWR CLK a_619_368# VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=3.304e+11p ps=2.83e+06u
 .ends
-
diff --git a/cells/sdfstp/sky130_fd_sc_hs__sdfstp_1.spice b/cells/sdfstp/sky130_fd_sc_hs__sdfstp_1.spice
index b2156b2..ae26bf1 100644
--- a/cells/sdfstp/sky130_fd_sc_hs__sdfstp_1.spice
+++ b/cells/sdfstp/sky130_fd_sc_hs__sdfstp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 VPWR a_1198_55# a_1128_457# VPB pshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfstp/sky130_fd_sc_hs__sdfstp_2.spice b/cells/sdfstp/sky130_fd_sc_hs__sdfstp_2.spice
index c7ac346..a160ad1 100644
--- a/cells/sdfstp/sky130_fd_sc_hs__sdfstp_2.spice
+++ b/cells/sdfstp/sky130_fd_sc_hs__sdfstp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__sdfstp_2 CLK D SCD SCE SET_B VGND VNB VPB VPWR Q
 M1000 a_1804_424# a_795_74# a_1641_74# VNB nlowvt w=640000u l=150000u
@@ -94,4 +109,3 @@
 M1045 a_290_464# D a_206_464# VPB pshort w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfstp/sky130_fd_sc_hs__sdfstp_4.spice b/cells/sdfstp/sky130_fd_sc_hs__sdfstp_4.spice
index 067ad09..6ab4e94 100644
--- a/cells/sdfstp/sky130_fd_sc_hs__sdfstp_4.spice
+++ b/cells/sdfstp/sky130_fd_sc_hs__sdfstp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__sdfstp_4 CLK D SCD SCE SET_B VGND VNB VPB VPWR Q
 M1000 VPWR SCD a_414_464# VPB pshort w=640000u l=150000u
@@ -104,4 +119,3 @@
 M1050 VPWR a_1823_524# a_2580_74# VPB pshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfxbp/sky130_fd_sc_hs__sdfxbp_1.spice b/cells/sdfxbp/sky130_fd_sc_hs__sdfxbp_1.spice
index 17c9326..cab091c 100644
--- a/cells/sdfxbp/sky130_fd_sc_hs__sdfxbp_1.spice
+++ b/cells/sdfxbp/sky130_fd_sc_hs__sdfxbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__sdfxbp_1 CLK D SCD SCE VGND VNB VPB VPWR Q Q_N
 M1000 a_828_74# a_612_74# VPWR VPB pshort w=1.12e+06u l=150000u
@@ -74,4 +89,3 @@
 M1035 a_1021_100# a_612_74# a_296_74# VNB nlowvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfxbp/sky130_fd_sc_hs__sdfxbp_2.spice b/cells/sdfxbp/sky130_fd_sc_hs__sdfxbp_2.spice
index bbb314d..5586569 100644
--- a/cells/sdfxbp/sky130_fd_sc_hs__sdfxbp_2.spice
+++ b/cells/sdfxbp/sky130_fd_sc_hs__sdfxbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 VPWR a_1711_48# a_2322_368# VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=2.85e+11p ps=2.57e+06u
 .ends
-
diff --git a/cells/sdfxtp/sky130_fd_sc_hs__sdfxtp_1.spice b/cells/sdfxtp/sky130_fd_sc_hs__sdfxtp_1.spice
index 44c15c0..c8f52e2 100644
--- a/cells/sdfxtp/sky130_fd_sc_hs__sdfxtp_1.spice
+++ b/cells/sdfxtp/sky130_fd_sc_hs__sdfxtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_1018_100# a_828_74# a_301_74# VPB pshort w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdfxtp/sky130_fd_sc_hs__sdfxtp_2.spice b/cells/sdfxtp/sky130_fd_sc_hs__sdfxtp_2.spice
index 4b1c45d..103e989 100644
--- a/cells/sdfxtp/sky130_fd_sc_hs__sdfxtp_2.spice
+++ b/cells/sdfxtp/sky130_fd_sc_hs__sdfxtp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__sdfxtp_2 CLK D SCD SCE VGND VNB VPB VPWR Q
 M1000 a_1044_100# a_634_74# a_300_453# VNB nlowvt w=420000u l=150000u
@@ -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_hs__sdfxtp_4.spice b/cells/sdfxtp/sky130_fd_sc_hs__sdfxtp_4.spice
index e7288a5..1338822 100644
--- a/cells/sdfxtp/sky130_fd_sc_hs__sdfxtp_4.spice
+++ b/cells/sdfxtp/sky130_fd_sc_hs__sdfxtp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__sdfxtp_4 CLK D SCD SCE VGND VNB VPB VPWR Q
 M1000 Q a_1814_48# VPWR VPB pshort w=1.12e+06u l=150000u
@@ -80,4 +95,3 @@
 M1038 a_1814_48# a_1587_74# VPWR VPB pshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdlclkp/sky130_fd_sc_hs__sdlclkp_1.spice b/cells/sdlclkp/sky130_fd_sc_hs__sdlclkp_1.spice
index e44ae17..50a3aaf 100644
--- a/cells/sdlclkp/sky130_fd_sc_hs__sdlclkp_1.spice
+++ b/cells/sdlclkp/sky130_fd_sc_hs__sdlclkp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__sdlclkp_1 CLK GATE SCE VGND VNB VPB VPWR GCLK
 M1000 a_318_74# a_288_48# VGND VNB nlowvt w=740000u l=150000u
@@ -46,4 +61,3 @@
 M1021 VPWR a_709_54# a_1238_94# VPB pshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/sdlclkp/sky130_fd_sc_hs__sdlclkp_2.spice b/cells/sdlclkp/sky130_fd_sc_hs__sdlclkp_2.spice
index b85b814..6fd96d0 100644
--- a/cells/sdlclkp/sky130_fd_sc_hs__sdlclkp_2.spice
+++ b/cells/sdlclkp/sky130_fd_sc_hs__sdlclkp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__sdlclkp_2 CLK GATE SCE VGND VNB VPB VPWR GCLK
 M1000 VGND CLK a_288_48# VNB nlowvt w=740000u l=150000u
@@ -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_hs__sdlclkp_4.spice b/cells/sdlclkp/sky130_fd_sc_hs__sdlclkp_4.spice
index 998613c..5b6c50d 100644
--- a/cells/sdlclkp/sky130_fd_sc_hs__sdlclkp_4.spice
+++ b/cells/sdlclkp/sky130_fd_sc_hs__sdlclkp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__sdlclkp_4 CLK GATE SCE VGND VNB VPB VPWR GCLK
 M1000 a_792_48# a_634_74# VPWR VPB pshort w=1.12e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 GCLK a_1289_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_hs__sedfxbp_1.spice b/cells/sedfxbp/sky130_fd_sc_hs__sedfxbp_1.spice
index 9ee8383..1eef809 100644
--- a/cells/sedfxbp/sky130_fd_sc_hs__sedfxbp_1.spice
+++ b/cells/sedfxbp/sky130_fd_sc_hs__sedfxbp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__sedfxbp_1 CLK D DE SCD SCE VGND VNB VPB VPWR Q Q_N
 M1000 a_1747_118# a_1348_368# a_697_113# VNB nlowvt w=420000u l=150000u
@@ -90,4 +105,3 @@
 M1043 VGND SCE a_667_87# VNB nlowvt w=420000u l=150000u
 +  ad=0p pd=0u as=1.197e+11p ps=1.41e+06u
 .ends
-
diff --git a/cells/sedfxbp/sky130_fd_sc_hs__sedfxbp_2.spice b/cells/sedfxbp/sky130_fd_sc_hs__sedfxbp_2.spice
index 837800a..d05139f 100644
--- a/cells/sedfxbp/sky130_fd_sc_hs__sedfxbp_2.spice
+++ b/cells/sedfxbp/sky130_fd_sc_hs__sedfxbp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__sedfxbp_2 CLK D DE SCD SCE VGND VNB VPB VPWR Q Q_N
 M1000 a_1088_453# SCD VPWR VPB pshort w=640000u l=150000u
@@ -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_hs__sedfxtp_1.spice b/cells/sedfxtp/sky130_fd_sc_hs__sedfxtp_1.spice
index 67b3522..fa50c59 100644
--- a/cells/sedfxtp/sky130_fd_sc_hs__sedfxtp_1.spice
+++ b/cells/sedfxtp/sky130_fd_sc_hs__sedfxtp_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__sedfxtp_1 CLK D DE SCD SCE VGND VNB VPB VPWR Q
 M1000 a_27_74# a_547_301# a_554_463# VPB pshort w=640000u l=150000u
@@ -86,4 +101,3 @@
 M1041 VGND SCE a_639_85# VNB nlowvt w=420000u l=150000u
 +  ad=0p pd=0u as=1.176e+11p ps=1.4e+06u
 .ends
-
diff --git a/cells/sedfxtp/sky130_fd_sc_hs__sedfxtp_2.spice b/cells/sedfxtp/sky130_fd_sc_hs__sedfxtp_2.spice
index a440cb9..b97f6a0 100644
--- a/cells/sedfxtp/sky130_fd_sc_hs__sedfxtp_2.spice
+++ b/cells/sedfxtp/sky130_fd_sc_hs__sedfxtp_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__sedfxtp_2 CLK D DE SCD SCE VGND VNB VPB VPWR Q
 M1000 a_1340_74# CLK VPWR VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__sedfxtp_4.spice b/cells/sedfxtp/sky130_fd_sc_hs__sedfxtp_4.spice
index ec4f1e1..9443c3a 100644
--- a/cells/sedfxtp/sky130_fd_sc_hs__sedfxtp_4.spice
+++ b/cells/sedfxtp/sky130_fd_sc_hs__sedfxtp_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__sedfxtp_4 CLK D DE SCD SCE VGND VNB VPB VPWR Q
 M1000 a_661_113# a_631_87# a_1071_455# VPB pshort w=640000u l=150000u
@@ -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_hs__tap_1.spice b/cells/tap/sky130_fd_sc_hs__tap_1.spice
index 949013b..4199602 100644
--- a/cells/tap/sky130_fd_sc_hs__tap_1.spice
+++ b/cells/tap/sky130_fd_sc_hs__tap_1.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__tap_1 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/tap/sky130_fd_sc_hs__tap_2.spice b/cells/tap/sky130_fd_sc_hs__tap_2.spice
index 4705b22..c4a04b8 100644
--- a/cells/tap/sky130_fd_sc_hs__tap_2.spice
+++ b/cells/tap/sky130_fd_sc_hs__tap_2.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__tap_2 VGND VNB VPB VPWR
 .ends
-
diff --git a/cells/tapmet1/sky130_fd_sc_hs__tapmet1_2.spice b/cells/tapmet1/sky130_fd_sc_hs__tapmet1_2.spice
index d4e7aac..7920dd6 100644
--- a/cells/tapmet1/sky130_fd_sc_hs__tapmet1_2.spice
+++ b/cells/tapmet1/sky130_fd_sc_hs__tapmet1_2.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__tapmet1_2 VGND VPB VPWR
 .ends
-
diff --git a/cells/tapvgnd/sky130_fd_sc_hs__tapvgnd_1.spice b/cells/tapvgnd/sky130_fd_sc_hs__tapvgnd_1.spice
index 7602c41..d99dfff 100644
--- a/cells/tapvgnd/sky130_fd_sc_hs__tapvgnd_1.spice
+++ b/cells/tapvgnd/sky130_fd_sc_hs__tapvgnd_1.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__tapvgnd_1 VGND VPB VPWR
 .ends
-
diff --git a/cells/tapvgnd2/sky130_fd_sc_hs__tapvgnd2_1.spice b/cells/tapvgnd2/sky130_fd_sc_hs__tapvgnd2_1.spice
index d7b3b95..d9dab9a 100644
--- a/cells/tapvgnd2/sky130_fd_sc_hs__tapvgnd2_1.spice
+++ b/cells/tapvgnd2/sky130_fd_sc_hs__tapvgnd2_1.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__tapvgnd2_1 VGND VPB VPWR
 .ends
-
diff --git a/cells/tapvpwrvgnd/sky130_fd_sc_hs__tapvpwrvgnd_1.spice b/cells/tapvpwrvgnd/sky130_fd_sc_hs__tapvpwrvgnd_1.spice
index 2b5228b..abe63f0 100644
--- a/cells/tapvpwrvgnd/sky130_fd_sc_hs__tapvpwrvgnd_1.spice
+++ b/cells/tapvpwrvgnd/sky130_fd_sc_hs__tapvpwrvgnd_1.spice
@@ -1,5 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__tapvpwrvgnd_1 VGND VPWR
 .ends
-
diff --git a/cells/xnor2/sky130_fd_sc_hs__xnor2_1.spice b/cells/xnor2/sky130_fd_sc_hs__xnor2_1.spice
index 8314f77..a11aaf6 100644
--- a/cells/xnor2/sky130_fd_sc_hs__xnor2_1.spice
+++ b/cells/xnor2/sky130_fd_sc_hs__xnor2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 a_293_74# B VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xnor2/sky130_fd_sc_hs__xnor2_2.spice b/cells/xnor2/sky130_fd_sc_hs__xnor2_2.spice
index dbcb5cf..7c3b7d2 100644
--- a/cells/xnor2/sky130_fd_sc_hs__xnor2_2.spice
+++ b/cells/xnor2/sky130_fd_sc_hs__xnor2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__xnor2_2 A B VGND VNB VPB VPWR Y
 M1000 a_340_107# B VGND VNB nlowvt w=740000u l=150000u
@@ -34,4 +49,3 @@
 M1015 a_133_368# A VPWR VPB pshort w=1e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xnor2/sky130_fd_sc_hs__xnor2_4.spice b/cells/xnor2/sky130_fd_sc_hs__xnor2_4.spice
index 8f6eddf..c9b6981 100644
--- a/cells/xnor2/sky130_fd_sc_hs__xnor2_4.spice
+++ b/cells/xnor2/sky130_fd_sc_hs__xnor2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__xnor2_4 A B VGND VNB VPB VPWR Y
 M1000 VGND B a_511_74# VNB nlowvt w=740000u l=150000u
@@ -62,4 +77,3 @@
 M1029 Y a_116_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_hs__xnor3_1.spice b/cells/xnor3/sky130_fd_sc_hs__xnor3_1.spice
index 9ead5b3..a33225e 100644
--- a/cells/xnor3/sky130_fd_sc_hs__xnor3_1.spice
+++ b/cells/xnor3/sky130_fd_sc_hs__xnor3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__xnor3_1 A B C VGND VNB VPB VPWR X
 M1000 a_786_100# B VGND VNB nlowvt w=740000u l=150000u
@@ -46,4 +61,3 @@
 M1021 a_363_394# a_786_100# a_1113_383# VNB nlowvt w=420000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xnor3/sky130_fd_sc_hs__xnor3_2.spice b/cells/xnor3/sky130_fd_sc_hs__xnor3_2.spice
index d4a3bbc..a2e7013 100644
--- a/cells/xnor3/sky130_fd_sc_hs__xnor3_2.spice
+++ b/cells/xnor3/sky130_fd_sc_hs__xnor3_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__xnor3_2 A B C VGND VNB VPB VPWR X
 M1000 VPWR C a_1027_48# VPB pshort w=640000u l=150000u
@@ -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_hs__xnor3_4.spice b/cells/xnor3/sky130_fd_sc_hs__xnor3_4.spice
index 376c77e..017f48b 100644
--- a/cells/xnor3/sky130_fd_sc_hs__xnor3_4.spice
+++ b/cells/xnor3/sky130_fd_sc_hs__xnor3_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__xnor3_4 A B C VGND VNB VPB VPWR X
 M1000 a_1057_74# a_1024_300# a_324_373# VPB pshort w=840000u l=150000u
@@ -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_hs__xor2_1.spice b/cells/xor2/sky130_fd_sc_hs__xor2_1.spice
index df510cd..84d0afa 100644
--- a/cells/xor2/sky130_fd_sc_hs__xor2_1.spice
+++ b/cells/xor2/sky130_fd_sc_hs__xor2_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__xor2_1 A B VGND VNB VPB VPWR X
 M1000 a_158_392# A VPWR VPB pshort w=1e+06u l=150000u
@@ -22,4 +37,3 @@
 M1009 VPWR A a_355_368# VPB pshort w=1.12e+06u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xor2/sky130_fd_sc_hs__xor2_2.spice b/cells/xor2/sky130_fd_sc_hs__xor2_2.spice
index b6999e6..0335e1a 100644
--- a/cells/xor2/sky130_fd_sc_hs__xor2_2.spice
+++ b/cells/xor2/sky130_fd_sc_hs__xor2_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__xor2_2 A B VGND VNB VPB VPWR X
 M1000 VGND B a_183_74# VNB nlowvt w=640000u l=150000u
@@ -32,4 +47,3 @@
 M1014 X a_183_74# VGND VNB nlowvt w=740000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xor2/sky130_fd_sc_hs__xor2_4.spice b/cells/xor2/sky130_fd_sc_hs__xor2_4.spice
index 4c7ab42..6e7486f 100644
--- a/cells/xor2/sky130_fd_sc_hs__xor2_4.spice
+++ b/cells/xor2/sky130_fd_sc_hs__xor2_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__xor2_4 A B VGND VNB VPB VPWR X
 M1000 a_514_368# a_160_98# X VPB pshort w=1.12e+06u l=150000u
@@ -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_hs__xor3_1.spice b/cells/xor3/sky130_fd_sc_hs__xor3_1.spice
index 7364717..b5f98e5 100644
--- a/cells/xor3/sky130_fd_sc_hs__xor3_1.spice
+++ b/cells/xor3/sky130_fd_sc_hs__xor3_1.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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 a_384_392# B a_84_108# VPB pshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xor3/sky130_fd_sc_hs__xor3_2.spice b/cells/xor3/sky130_fd_sc_hs__xor3_2.spice
index 1a0d586..59c3431 100644
--- a/cells/xor3/sky130_fd_sc_hs__xor3_2.spice
+++ b/cells/xor3/sky130_fd_sc_hs__xor3_2.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__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_372_419# C a_1195_424# VPB pshort w=840000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-
diff --git a/cells/xor3/sky130_fd_sc_hs__xor3_4.spice b/cells/xor3/sky130_fd_sc_hs__xor3_4.spice
index 31d2295..f3bf1dc 100644
--- a/cells/xor3/sky130_fd_sc_hs__xor3_4.spice
+++ b/cells/xor3/sky130_fd_sc_hs__xor3_4.spice
@@ -1,4 +1,19 @@
-* NGSPICE file created from sky130_fd_sc_hs__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_hs__xor3_4 A B C VGND VNB VPB VPWR X
 M1000 X a_1218_388# VPWR VPB pshort w=1.12e+06u l=150000u
@@ -58,4 +73,3 @@
 M1027 a_74_294# a_397_320# a_323_392# VNB nlowvt w=640000u l=150000u
 +  ad=0p pd=0u as=0p ps=0u
 .ends
-