I'm not exactly sure Racket existed when this project was created. Furthermore, Racket is non-standard. Which is really the issue with Scheme. Prior to Racke

I'm not exactly sure Racket existed when this project was created. Furthermore, Racket is non-standard. Which is really the issue with Scheme. Prior to Racket there were SLIB and SRFIs. Which are still non-standard, but at least more universal.