Wed, 23 Apr 1997 11:12:10 +0200 paulson Unfortunately, the \\< syntax does not always accept the beginning of a line
Wed, 23 Apr 1997 11:11:38 +0200 paulson Loop detection: before expanding a haz formula, see whether it is a duplicate
Wed, 23 Apr 1997 11:05:52 +0200 paulson Made a proof search more deterministic
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