Squine stands for “scheme quine”. It’s a little IDE for the subset of scheme introduced in The Little Schemer. It’s based on Yon, and bundles your scheme code, the IDE as well as a little scheme interpreter within a single HTML file that you can pass around. As of now, the only primitives included are: define quote car cdr cons null? zero? atom? number? eq? or and add1 sub1 lambda cond letrec. More might get added in the future!