DuckCorp Dico

Found one definition

1.                 From The Free On-line Dictionary of Computing (19 January 2023):
                   
   
   
                   
                     
   WOOL
      Window Object Oriented Language.  A small Common Lisp-like
      extension language.  It claims to be the fastest interpreted
      language in C with run-time types.  Colas Nahaboo
      <colas@sophia.inria.fr>.  Version 1 is used as the kernel
      language of the GWM window manager.  Version 2 has an object
      system.
      (ftp://export.lcs.mit.edu/contrib/gwm).