The Free On-line Dictionary of Computing (30 December 2018):

CommonLoops

    Xerox's object-oriented Lisp which led to
   CLOS.

   See also Portable CommonLoops.

   (ftp://arisia.xerox.com/pub/pcl/September-16-92-PCL-c.tar.Z).

   ["CommonLoops: Merging Lisp and Object-Oriented Programming",
   D.G. Bobrow et al, SIGPLAN Notices 21(11):17-29, Nov 1986].

   (1999-07-02)