[racket-dev] multiple key-press

I just spoke with a room of high-school students studying Universe
programming in a summer course at Brown.

One major complaint was that they couldn't do multi-key-presses.  For
instance, they want to use WASD navigation combined with a right-side
key for firing, and want to be able to fire and navigate at the "same
time".

They've been using Shift, but the general consensus amongst the kids
was this was Not Cool.  Basically, they felt like they were being
cheated out of building a "real game".

I don't know what it would take to support this.

Shriram