[plt-scheme] planet require idea

[Eli Barzilay]

(I forgot to add:) Another thing to look at is peg revisions in
Subversion -- where a url has a `@<REV>' suffix.
-- 
          ((lambda (x) (x x)) (lambda (x) (x x)))          Eli Barzilay:
                  http://www.barzilay.org/                 Maze is Life!