/\/CVS/d;
/\.cvsignore$/d;
/^twelf\/DISTRIBUTE/d;
/^twelf\/FILES/d;
/^twelf\/HISTORY/d;
/^twelf\/InstallShield/d;
/^twelf\/TEST/d;
/^twelf\/OLD/d;
/^twelf\/bin\/\.heap\/twelf/d;
/^twelf\/bin\/clean/d;
/^twelf\/bin\/create\-tags/d;
/^twelf\/bin\/tag/d;
/^twelf\/bin\/twelf/d;
/^twelf\/bin\/\.twelf/d;
/WALK$/d;
/^twelf\/doc\/guide/d;
/^twelf\/exercises/d;
/^twelf\/nsis/d;
/^twelf\/rpm/d;