Thu, 28 Mar 2013 15:37:39 +0100 wenzelm merged;
Thu, 28 Mar 2013 15:36:45 +0100 wenzelm basic support for Pretty.item, which is considered as logical markup and interpreted in Isabelle/Scala, but ignored elsewhere (TTY, latex etc.);
Thu, 28 Mar 2013 15:00:27 +0100 wenzelm maintain integer indentation during formatting -- it needs to be implemented by repeated spaces eventually;
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