Mon, 26 Jun 1995 14:32:26 +0200 wenzelm added extend_trrules_i;
Fri, 23 Jun 1995 11:59:06 +0200 clasohm added a few comments on ThyInfo
Fri, 23 Jun 1995 09:15:09 +0200 nipkow Put in direct proof of C-R w/o detour via cd.
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