Sun, 28 Feb 2016 19:54:18 +0100 wenzelm simplified / unified isatest settings;
Sun, 28 Feb 2016 17:40:01 +0100 wenzelm tuned signature;
Sun, 28 Feb 2016 17:37:20 +0100 wenzelm discontinued old 'header';
Sun, 28 Feb 2016 15:57:03 +0100 wenzelm more official "isabelle check_sources";
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