Interpress
Interpress is a page description language developed at Xerox PARC, based on the Forth programming language and an earlier graphics language called JaM. PARC failed to commercialize it, so its creators, Chuck Geschke and John Warnock, founded Adobe Systems in 1982, and developed PostScript. Interpress is used in some Xerox printers, notably the DocuTech Network Production Publisher, and is supported in Xerox Ventura Publisher.