"Warp programs are written in a high level Pascal-like language called W2, which is supported by an optimizing compiler written in Common Lisp. W2 programs are developed in a sophisticated, Lisp-based programming environment supporting interactive program development and debugging. A C or Lisp program can call a W2 program from any UNIX host on the local area network."

Ah, the good old days of the dominance of Lisp in artificial intelligence research.