Mon, 02 May 2011 21:41:39 +0200 wenzelm removed obsolete rail diagrams (which were about old-style theory syntax);
Mon, 02 May 2011 21:33:21 +0200 wenzelm moved material about old codegen to isar-ref manual;
Mon, 02 May 2011 20:34:34 +0200 wenzelm eliminated some duplicate "def" positions;
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