Is it ensure, insure, or assure?
(JOSS) An early, simple, interactive calculator language developed by Charles L. Baker at Rand in 1964. There were two versions: JOSS I and JOSS II.
[Connection with Johnniac?]
["JOSS Users' Reference Manual", R.L. Clark, Report F-1535/9, RAND Corp (Jan 1975)].
[Sammet 1969, pp. 217-226].