Thu, 27 Jul 1995 13:13:32 +0200 wenzelm minor fix: instance now raises error if witness axioms don't exist;
Wed, 26 Jul 1995 17:35:23 +0200 lcp Many small changes to make proofs run faster
Wed, 26 Jul 1995 16:23:42 +0200 lcp Now includes all the AC files
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