Fri, 15 Jul 2016 23:47:07 +0200 wenzelm more operations;
Fri, 15 Jul 2016 23:46:28 +0200 wenzelm singleton result for 'proof' command (without backtracking), e.g. relevant for well-defined output;
Fri, 15 Jul 2016 22:23:36 +0200 wenzelm unused;
Fri, 15 Jul 2016 22:17:09 +0200 wenzelm more structured edit, including indentation;
Fri, 15 Jul 2016 22:11:54 +0200 wenzelm clarified markup;
Fri, 15 Jul 2016 15:19:12 +0200 wenzelm merged
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