1996-03-08 ago added constdefs section
1996-02-05 ago expanded tabs; renamed subtype to typedef;
1995-11-29 ago removed quotes from types in consts and syntax sections
1995-10-04 ago added local simpsets; removed IOA from 'make test'
1995-05-09 ago Prod is now a parent of Lfp.
1995-03-03 ago new version of HOL with curried function application