Mon, 03 Feb 2014 16:33:54 +0100 wenzelm more formal markup;
Mon, 03 Feb 2014 15:44:46 +0100 wenzelm clarified error messages: Pretty.str is for atomic/unformatted strings only, accumulate buffer of formatted strings instead;
Mon, 03 Feb 2014 15:31:47 +0100 wenzelm just error, not a failed attempt to raise an exception;
Mon, 03 Feb 2014 15:28:01 +0100 wenzelm tuned whitespace;
Mon, 03 Feb 2014 13:45:54 +0100 wenzelm tuned;
Mon, 03 Feb 2014 19:32:02 +0100 blanchet generate comments in Isar proofs
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