Interpreted FORTH -like graphics language, possibly the first page description language , predating PostScript . Both are descendants of JaM . Used on Xerox printers.
["Interpress, The Source Book", Steven Harrington et al, P-H 1988.]
INTERPRESS
Meaning of INTERPRESS in English
FOLDOC computer English dictionary. Английский словарь по компьютерам FOLDOC. 2012