| 2009-08-03 | Christian Urban | tuned | file | diff | annotate |
| 2009-08-03 | Christian Urban | replaced "writeln" with "tracing" | file | diff | annotate |
| 2009-08-02 | Christian Urban | updated to Isabelle changes and merged sections in the FirstSteps chapter | file | diff | annotate |
| 2009-08-01 | Christian Urban | some general polishing | file | diff | annotate |
| 2009-07-30 | Christian Urban | tuned figure placement | file | diff | annotate |
| 2009-07-30 | Christian Urban | polished the package chapter used FOCUS to explain the subproofs | file | diff | annotate |
| 2009-07-30 | Christian Urban | made changes for SUBPROOF and sat_tac | file | diff | annotate |
| 2009-07-28 | Christian Urban | slightly changed exercises about rev_sum | file | diff | annotate |