Wed, 02 Sep 1998 10:36:22 +0200 paulson Moved constrains_tac from SubstAx to Constrains.
Wed, 02 Sep 1998 10:35:11 +0200 paulson small simplification to not_Says_to_self
Tue, 01 Sep 1998 15:07:11 +0200 paulson New approach, using a locale
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