| Mon, 03 Aug 2009 14:01:57 +0200 | Christian Urban | replaced "writeln" with "tracing" | file | diff | annotate |
| Sun, 02 Aug 2009 08:44:41 +0200 | Christian Urban | updated to Isabelle changes and merged sections in the FirstSteps chapter | file | diff | annotate |
| Thu, 30 Jul 2009 15:51:51 +0200 | Christian Urban | polished the package chapter used FOCUS to explain the subproofs | file | diff | annotate |