Wed, 13 Jul 2016 20:00:56 +0200 wenzelm clarified indentation (amending 37a3fc20154d);
Wed, 13 Jul 2016 19:57:30 +0200 wenzelm tuned;
Wed, 13 Jul 2016 19:50:44 +0200 wenzelm tuned;
Wed, 13 Jul 2016 19:36:47 +0200 wenzelm tuned;
Wed, 13 Jul 2016 19:10:35 +0200 wenzelm clarified indentation of proof commands, notably for "notepad begin", which lacks a head goal;
Wed, 13 Jul 2016 19:04:49 +0200 wenzelm clarified indentation: 'begin' is treated like a separate command without indent;
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