Tue, 18 Nov 2008 22:25:30 +0100 wenzelm fulfill_proof/thm_proof: commuted lazyness;
Tue, 18 Nov 2008 21:17:14 +0100 krauss removed lemmas called lemma1 and lemma2
Tue, 18 Nov 2008 18:25:59 +0100 wenzelm force_proofs after cumulative use_thys;
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