<wob_jonas> perl -eopen$i,"<",($f="wisdom/aristotle");$_=<$i>; s/(fifth) kind of vitreous/$1/ or die; if (1) { open$o,">",$f; print$o $_ or die; } print substr$_,200;

Ghouls are undead that eat BRAINS. So basically, bog standard undead like zombies or wights, but with some fancy back story in the book that nobody reads.