Variable Definitions Supported in Clojure, Common Lisp, ISLisp, newLISP, Picolisp and Scheme     variable constant ("immutable variable") global lexical ISLisp (defglobal) Scheme (define)   dynamic Clojure (def) CL (defvar, defparameter) ISLisp (defdynamic) Picolisp (de) Newlisp (define) CL (defconstant) ISLisp (defconstant) Newlisp (define + constant) local lexical CL (let, let*) ISLisp (let, let*) Scheme (let, let*, letrec, letrec*) Clojure (let, let*) dynamic Clojure (def + binding) CL (let + declare special, def... + let) ISLisp (dynamic-let) Newlisp (let, letn) Picolisp (let)

If I forgot something or made mistake, please, let me know.