How does this compare to prescheme from scheme48? http://www.s48.org http://www.s48.org https://en.wikipedia.org/wiki/PreScheme https://en.wikipedia.org/wiki/

How does this compare to prescheme from scheme48? http://www.s48.org http://www.s48.org https://en.wikipedia.org/wiki/PreScheme https://en.wikipedia.org/wiki/PreScheme