| Wed, 04 Mar 2009 10:47:20 +0100 | nipkow | Made Option a separate theory and renamed option_map to Option.map | file | diff | annotate |
| Wed, 27 Apr 2005 16:39:44 +0200 | paulson | partial modernising of theory headers | file | diff | annotate |
| Mon, 21 Jun 2004 10:25:57 +0200 | kleing | Merged in license change from Isabelle2004 | file | diff | annotate |