Fri, 19 Aug 1994 15:36:23 +0200 removed roots arg of extend_gram;
wenzelm [Fri, 19 Aug 1994 15:36:23 +0200] rev 552
removed roots arg of extend_gram; added functor sig constraint (: PARSER);
Fri, 19 Aug 1994 15:35:56 +0200 minor cleanings;
wenzelm [Fri, 19 Aug 1994 15:35:56 +0200] rev 551
minor cleanings;
Fri, 19 Aug 1994 15:35:38 +0200 replaced id, var, tid, tvar by idT, varT, tidT, tvarT;
wenzelm [Fri, 19 Aug 1994 15:35:38 +0200] rev 550
replaced id, var, tid, tvar by idT, varT, tidT, tvarT; added const, free, var: build atomic terms of dummyT; added 'xnum' (signed numerals) and 'xstr' (strings) token kinds; various minor internal changes;
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