OK, I get it now. There's junk in unALLOTted memory up to a certain point; after that it's all zeroes. So after that point, then if you have a wordlist at the end of the dictionary, `head?` thinks it's is followed by a header even though it isn't, and then that causes trouble. So compiling anything or putting data there or whatever makes it go away. That's not so bad. Disconcerting though. Maybe there should be a comment on `.voc` -- it took me a while to think to look at `head?`...
--Josh
