Let's try this again without the huge attachment. On Aug 2, 2006, we were discussing alternative API's for the world teachpack. I've implemented what I had in mind; see http:// www.adelphi.edu/sbloch/my-world.ss . It's not terribly elegant; consider it a proof of concept, and the gurus are welcome to clean it up. Stephen Bloch sbloch at adelphi.edu