wenzelm [Fri, 19 Aug 1994 15:40:44 +0200] rev 562
added pretty_sg;
added infer_types;
removed subclasses arg of add_classes;
removed old 'extend' and related stuff;
various minor internal changes;
wenzelm [Fri, 19 Aug 1994 15:40:10 +0200] rev 561
added add_defs, add_defs_i;
wenzelm [Fri, 19 Aug 1994 15:39:52 +0200] rev 560
cleaned sig;
removed add_defns (now in drule.ML as add_defs);
removed add_sigclass;
minor internal changes;
wenzelm [Fri, 19 Aug 1994 15:39:19 +0200] rev 559
added theory_of_sign, theory_of_thm;
renamed get_thms to thms_of;
improved store_thms etc.;
wenzelm [Fri, 19 Aug 1994 15:38:50 +0200] rev 558
renamed 'defns' to 'defs';
removed 'sigclass';
replaced parents by enclose;
exported parens, brackets, mk_list, mk_big_list, mk_pair, mk_triple;
various minor internal changes;
wenzelm [Fri, 19 Aug 1994 15:38:18 +0200] rev 557
added raw_term_sorts and changed typ_of_term accordingly (part of fix
of the typevar-sort-constraint BUG);
various minor internal changes;