Sat, 14 Aug 2010 18:43:45 +0200 wenzelm moved isar_document.ML/scala to Pure/System/ -- side-by-side with isar.ML;
Sat, 14 Aug 2010 13:24:06 +0200 wenzelm merged
Fri, 13 Aug 2010 16:40:47 +0200 haftmann robustified proof
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