Lisp is one of the most significant early AI programming langauges, known for its heavy use of brackets. Lisp stands for "List processing" and the language is heavily influenced by the lambda calculus. Lisp has several dialects including Scheme. Lisp is an early functional programmon g lanugage although not a pure finctional language as it has updatabale variables and state.
Used on pages 163, 422, 428
Links:
tutorialspoint.com: Online Lisp Compiler