+pl 12.jcn2
+ - Lookup abstract base class
+ - Lookup/Symtable(s): separation of input/output
+pl 12.jcn1
+ - applied to 12.hwn2 patch
+ - redo of 11.jcn2's lookup/identifier
+
+pl 11.jcn2
+ - preparations for braindead PostScript output
pl 12.hwn1
- \remove "Engraver_type";