Sun, 20 Nov 2011 17:57:09 +0100 wenzelm tuned signature;
Sun, 20 Nov 2011 17:44:41 +0100 wenzelm 'lemmas' / 'theorems' commands allow 'for' fixes and standardize the result before storing;
Sun, 20 Nov 2011 17:32:27 +0100 wenzelm updated comment;
Sun, 20 Nov 2011 17:04:59 +0100 wenzelm more uniform signature;
Sun, 20 Nov 2011 16:59:37 +0100 wenzelm uniform cert_vars/read_vars;
Sun, 20 Nov 2011 16:58:12 +0100 wenzelm eliminated dead code;
Sun, 20 Nov 2011 15:21:22 +0100 wenzelm clarified certify vs. sharing;
Sun, 20 Nov 2011 13:29:12 +0100 wenzelm tuned;
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