[racket] Racket style guide (was Re: Argument order conventions (was: Variable naming conventions))

Thanks for the guide!

What is the Racket convention for named constants? 

Somewhere along the way I picked up the convention of prefixing constants with k, ie. kMyConstant.   Transmuted into racket I find myself typing:
(define k-my-constant ...)  is there an established convention?

- Tom