John and Martin. An interpreted FORTH -like graphics language by John Warnock and Martin Newell, Xerox PARC , 1978. JaM was the forerunner of both Interpress and PostScript . It is mentioned in PostScript Language reference Manual, Adobe Systems, A-W 1985.
JAM
Meaning of JAM in English
FOLDOC computer English dictionary. Английский словарь по компьютерам FOLDOC. 2012