>> PostScript, which was once widely used > in academia. Not outside. NeXTSTEP utilized "Display PostScript"[0] for both printing and display. Apple's Cocoa

>> PostScript, which was once widely used > in academia. Not outside. NeXTSTEP utilized "Display PostScript"[0] for both printing and display. Apple's Cocoa can trace direct ancestry to frameworks originating in NeXTSTEP[1]. I am pretty sure this included use of PostScript in the display/printing frameworks as well, but do not have references to support that memory. So, while '.ps' files are not often seen in the wild, as you say, a strong case can be made that PostScript was once (if not currently) widely used. 0 - https://www.oreilly.com/library/view/learning-cocoa-with/0596003013/ch01.html https://www.oreilly.com/library/view/learning-cocoa-with/059... 1 - https://arstechnica.com/gadgets/2012/12/the-legacy-of-next-lives-on-in-os-x/ https://arstechnica.com/gadgets/2012/12/the-legacy-of-next-l...