This website has a couple of screenshots of InterLISP/65, an implementation of Interlisp for Atari 8-bit micros. Notice the POKE form.

Interlisp - Alchetron, The Free Social Encyclopedia
Interlisp (also seen with a variety of capitalizations) is a programming environment built around a version of the Lisp programming language. Interlisp development began in 1967 at Bolt, Beranek and Newman in Cambridge, Massachusetts as BBN LISP, which ran on PDP10 machines running the TENEX operat
