Fri, 26 Jun 2015 15:55:44 +0200 wenzelm more symbols;
Fri, 26 Jun 2015 15:03:54 +0200 wenzelm tuned proofs;
Fri, 26 Jun 2015 14:53:28 +0200 wenzelm do not expose goal parameters;
Fri, 26 Jun 2015 14:53:15 +0200 wenzelm more symbols;
Fri, 26 Jun 2015 11:44:22 +0200 wenzelm more symbols;
Fri, 26 Jun 2015 11:07:04 +0200 wenzelm proper spacing, as for other syntax for these symbols;
Fri, 26 Jun 2015 10:20:33 +0200 wenzelm tuned whitespace;
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