VEL

from The Free On-line Dictionary of Computing (8 July 2008)

LISP70
VEL

   A {Lisp} dialect descended from {MLISP} and {MLISP2}.  Also
   known as PLISP and VEL.  Useful for parsing.  Only the
   pattern-matching system was published and fully implemented.
   According to Alan Kay, LISP70 had an influence on
   {Smalltalk-72}.  "The LISP70 Pattern Matching System, Larry
   Tesler et al, IJCAI 73.