[plt-scheme] Confused by local

There was once a thread about this on comp.lang.scheme.

The short answer is in my original post:

http://tinyurl.com/btdvj

If you find yourself asking, "But what if I tried ___?", then
you should read the rest of that thread as well.  Odds are
your question was asked by someone else, and the answer
follows right along.

Shriram