CAL

CAL, short for Conversational Algebraic Language, was a programming language and system designed and developed by Butler Lampson at Berkeley in 1967 for the SDS 940 mainframe computer. CAL is a version of the seminal JOSS language with a number of cleanups and new features to take advantage of the SDS platform. Wikipedia

Aliases: Conversational Algebraic Language

Wikidata: Q5008638