Merge pull request #8 from mabrains/fix_docs_warnings
Fixing warnings
diff --git a/README.rst b/README.rst
index c9ea9e7..9f01351 100644
--- a/README.rst
+++ b/README.rst
@@ -1,4 +1,4 @@
-GlobalFoundries 180um MCU 7 track standard cells libraries
+GlobalFoundries 180nm MCU 7 track standard cells libraries
==========================================================
This repository contains the "7 track standard cells" implementation as part of
diff --git a/docs/symbols.rst b/docs/symbols.rst
new file mode 100644
index 0000000..bb77bc9
--- /dev/null
+++ b/docs/symbols.rst
@@ -0,0 +1,20 @@
+=========================
+Reading Databook Symbols
+=========================
+
+========== ================================
+**Symbol** **Definition**
+0 Logic Low
+1 Logic High
+HL High to Low Transition
+LH Low to High Transition
+↑ Positive Clock Edge
+↓ Negative Clock edge
+Tin Input Transition 30 to70 %
+Delay 50 to 50%
+Tout Output Transition 30 to 70%
+? Don't Care (Combinatorial Cells)
+X Don't Care (Sequential Cells)
+default No “when” condition for Input
+n/a No Transition
+========== ================================
