Fri, 16 May 2008 21:56:13 +0200 wenzelm * Method "cases", "induct", "coinduct": removed obsolete "(open)" option;
Fri, 16 May 2008 21:53:30 +0200 wenzelm removed obsolete option open;
Fri, 16 May 2008 21:53:29 +0200 wenzelm removed unused make_simple;
Fri, 16 May 2008 21:53:27 +0200 wenzelm removed obsolete case rule_context;
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