Tue, 01 Oct 2002 14:44:43 +0200 berghofe Adapted to new simplifier.
Tue, 01 Oct 2002 13:26:10 +0200 paulson Numerous cosmetic changes, prompted by the new simplifier
Tue, 01 Oct 2002 11:17:25 +0200 berghofe Deleted superfluous dest_implies.
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