Sat, 26 Mar 2011 21:28:04 +0100 wenzelm added Future.cond_forks convenience;
Sat, 26 Mar 2011 18:31:39 +0100 wenzelm Isabelle_System.create_tmp_path/with_tmp_file: optional extension;
Sat, 26 Mar 2011 19:16:30 +0100 wenzelm tuned;
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