The idea of a code stepper is pretty cool. Two other projects that come to mind after seeing this: http://jonnytran.com/machina/ http://jonnytran.com/machina/ a

The idea of a code stepper is pretty cool. Two other projects that come to mind after seeing this: http://jonnytran.com/machina/ http://jonnytran.com/machina/ and the Macro Stepper in Racket: http://docs.racket-lang.org/macro-debugger/index.html http://docs.racket-lang.org/macro-debugger/index.html