[plt-scheme] module question

Hi Jos,

Hmmm.  Looking back at your first example, I realize I didn't understand 
what was going on there.  My apologies!

There must be something funny happening with the toplevel; 'a' should have 
treated a as an unbound.  I get the feeling that this has something to do 
with the "hopelessness" of the toplevel.  It touches on the problems I had 
in:

http://list.cs.brown.edu/pipermail/plt-scheme/2005-August/009481.html