| 2009-07-21 | griff | show the type of "x" in the formula | file | diff | annotate |
| 2009-07-21 | griff | discussion of "const_name" before exercises | file | diff | annotate |
| 2009-07-21 | griff | if n would be 0, rev_sum would be missing an argument | file | diff | annotate |
| 2009-07-21 | Christian Urban | tuned | file | diff | annotate |