POP-1Package for Online Programming. Edinburgh, 1966. First of the POP family of languages. Used reverse Polish notation. Implemented as a threaded interpreter. EPU-R-17, U Edinburgh (Jul 1966). "POP-1: An Online Language", R. Popplestone, Mach Intell 2, E. Dale et al eds, Oliver and Boyd, Edinburgh 1968.
POOL-T ♦ POP ♦ PoP ♦ pop ♦ POP++ ♦ POP-1 ♦ POP-10 ♦ Pop-11 ♦ POP-2 ♦ POP3 ♦ POP-9X
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