I'm happy to use SBCL actually, it's just a bit easier to use CLISP as the book examples are for CLISP. I've already figured out how to run external programs fr

I'm happy to use SBCL actually, it's just a bit easier to use CLISP as the book examples are for CLISP. I've already figured out how to run external programs from SBCL (so that I could run dot which is used in Land of Lisp). However, there's no reason CUSP should be tied to SBCL.