add docs about additional "HEADER" variables stored in the OBJECTS section
@@ -47,6 +47,21 @@ $HANDSEED
FF
"""
+# Additional variables may be stored as DICTIONARYVAR in the OBJECTS
+# section in the DICTIONARY "AcDbVariableDictionary" of the root dict.
+# - CANNOSCALE
+# - CENTEREXE
+# - CENTERLTYPEFILE
+# - CETRANSPARENCY
+# - CMLEADERSTYLE
+# - CTABLESTYLE
+# - CVIEWDETAILSTYLE
+# - CVIEWSECTIONSTYLE
+# - LAYEREVAL
+# - LAYERNOTIFY
+# - LIGHTINGUNITS
+# - MSLTSCALE
+
class CustomVars:
"""Stores custom properties in the DXF header as $CUSTOMPROPERTYTAG and
