wolf:~/public_html/links> clisp
  i i i i i i i       ooooo    o        ooooooo   ooooo   ooooo
  I I I I I I I      8     8   8           8     8     o  8    8
  I  \ `+' /  I      8         8           8     8        8    8
   \  `-+-'  /       8         8           8      ooooo   8oooo
    `-__|__-'        8         8           8           8  8
        |            8     o   8           8     o     8  8
  ------+------       ooooo    8oooooo  ooo8ooo   ooooo   8

Welcome to GNU CLISP 2.49 (2010-07-07) <http://clisp.cons.org/>

Copyright (c) Bruno Haible, Michael Stoll 1992, 1993
Copyright (c) Bruno Haible, Marcus Daniels 1994-1997
Copyright (c) Bruno Haible, Pierpaolo Bernardi, Sam Steingold 1998
Copyright (c) Bruno Haible, Sam Steingold 1999-2000
Copyright (c) Sam Steingold, Bruno Haible 2001-2010

Type :h and hit Enter for context help.

[1]> (load "two_calculators.lsp")
;; Loading file two_calculators.lsp ...
;; Loaded file two_calculators.lsp
T
[2]> (calculator-RL)
Expression: 13.1 + 5.4 * 9.8
Result: 66.020004
Expression: 13.1 / 5.4 - 9.8
Result: 0.33587787
Expression: 2 * 7 - 9
Result: 4
Expression: 5 - 5 * 5
Result: 20
Expression:
*** - Ctrl-C: User break
The following restarts are available:
ABORT          :R1      Abort main loop
Break 1 [3]> :a
[4]> (bye)
Bye.