IEEE Bushy Tree

PostScript (PS) is a page description language and programming language used primarily in the electronic and desktop publishing areas.


The concepts of the PostScript language were seeded in 1976 when John Warnock was working at Evans & Sutherland, a famous computer graphics company. At that time John Warnock was developing an interpreter for a large three-dimensional graphics database of New York harbor. Warnock conceived the Design System language to process the graphics, very similar to the Forth programming language.

Concurrently, researchers at Xerox PARC had developed the first laser printer and had recognized the need for a standard means of defining page images. In 1975-76 a team led by Bob Sproull developed the Press format, which was eventually used in the Xerox Star system to drive laser printers. But Press, a data format rather than a language, lacked flexibility, and Xerox PARC mounted the InterPress effort to create a successor.

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PDF Branch
Preceded by
PostScript Followed by
PageMaker 7 Branch
Influenced by
PostScript Influenced
PageMaker 1.0