C:\Users\xXxCKxXx\Desktop>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 "CLOS.lsp")
;; Loading file CLOS.lsp ...
;; Loaded file CLOS.lsp
T
[2]> (init-class)
#<STANDARD-METHOD (#<STANDARD-CLASS ACCUMULATOR>)>
[3]> (setf acc (make-instance 'accumulator))
#<ACCUMULATOR #x1A301821>
[4]> (inc acc 2)
2
[5]> (inc acc 3)
5
[6]> (dec acc 5)
0
[7]> (inc acc 1000)
1000
[8]> (reset acc)
0
[9]> (bye)
Bye.