Sat, 17 Sep 2005 12:51:03 +0200 wenzelm obsolete;
Sat, 17 Sep 2005 12:50:57 +0200 wenzelm plain test session, includes example;
Sat, 17 Sep 2005 12:18:08 +0200 wenzelm theory_to_proof: check theory of initial proof state, which must not be changed;
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