TODO

renamed 2 lemmas

For Isabelle2005:

- update course material slides to new theory format (Tobias)

- modular generation of ML code with structures (Stefan)

- finding rewrite rules based on PG subterm selection (Tobias)

- a global "disprove" menu item both as an action and (if it can be done)
  as a setting (Stefan & Tjark)

- remove this file (Tobias)