Sun, 03 Jan 2010 19:53:58 +0100 wenzelm removed unused document_change bus;
Fri, 01 Jan 2010 22:29:08 +0100 wenzelm tuned;
Fri, 01 Jan 2010 22:20:54 +0100 wenzelm tuned;
Fri, 01 Jan 2010 22:11:32 +0100 wenzelm misc tuning;
Fri, 01 Jan 2010 21:53:00 +0100 wenzelm tuned Change: eliminated redundant copy of document id;
Fri, 01 Jan 2010 21:45:26 +0100 wenzelm eliminated redundant session documents database;
Fri, 01 Jan 2010 21:37:37 +0100 wenzelm use isabelle.Future;
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