It appears to be based on Chibi scheme which is Alex Shinn's embeddable scheme that was chosen as the reference for R7RS small. https://code.google.com/p/chibi

It appears to be based on Chibi scheme which is Alex Shinn's embeddable scheme that was chosen as the reference for R7RS small. https://code.google.com/p/chibi-scheme/ https://code.google.com/p/chibi-scheme/