Mon, 13 Mar 2000 15:42:19 +0100 wenzelm use cases;
Mon, 13 Mar 2000 13:34:09 +0100 wenzelm * HOL: exhaust_tac on datatypes superceded by new case_tac;
Mon, 13 Mar 2000 13:30:49 +0100 wenzelm renamed cases_tac to case_tac;
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