PostScript is a programming language, Sonoma is an operating system.

PostScript’s sudden death in Sonoma.

If there’s one language that’s been at the heart of the Macintosh for the last 39 years it’s PostScript, the page description language developed by the founders of Adobe, the late John Warnock and Charles Geschke, and their team of engineers. It brought the Mac’s first commercial success in desktop publishing, in PostScript fonts, and early PostScript printers including Apple’s game-changing LaserWriter.