SP, programming> (REPL) A programming Structure within LISP which repeatedly readS a form from the uSer, evaluateS it, and diSplayS the reSult. A read-eval-print loop formS the baSiS of the Top-LevelShell that programmerS of the LISP family of languageS interact with. In many dialectS of LISP a very Simple REPL could be implemented aS: (loop (print (eval (read)))). (2003-06-23)