Wed, 18 Aug 1999 10:54:44 +0200 paulson new primitive rule permute_prems to underlie defer_tac and rotate_prems
Wed, 18 Aug 1999 10:54:03 +0200 paulson freeze_thaw does nothing if no variables
Wed, 18 Aug 1999 10:27:57 +0200 nipkow Added take_all and drop_all to simpset.
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