Mon, 29 Sep 1997 14:10:52 +0200 wenzelm default margin 76 (to accomodate warning and error default output);
Mon, 29 Sep 1997 12:13:43 +0200 paulson Step_tac -> Safe_tac
Mon, 29 Sep 1997 11:56:04 +0200 paulson Much tidying including step_tac -> clarify_tac or safe_tac; sometimes
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