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People must really love PostScript!
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The printer's jammed, give them some time.
Meanwhile, more about PostScript:
John Warnock's "linguistic motherboard" and Owen Densmore's "class.ps" smalltalk-like object oriented PostScript programming system, which NeWS and The NeWS toolkit used.
https://news.ycombinator.com/item?id=29295116
Owen Densmore's work with Bill Atkinson and John Warnock on the Mac printing system, and his "linguistic motherboard" email and "Swiss Army NeWS: A Programmable Network Facility" white paper:
https://news.ycombinator.com/item?id=33827923
More history of PostScript, JAM, InterPress, and John Warnock's vision of PostScript as a "Linguistic Motherboard":
PostScript was the first language I ever used professionally! :P
At the time, I worked for a printing house in Kyiv that specialized in accidental printing (screen printing, flexo-, tampo- etc. i.e. mostly printing on weird curved surfaces, not paper). The triad (full-color) screen printing was all the rage (early-mid 90s). Part of the process of generating the films that were later used to irradiate the polymer layer covering the screen mold was bound to a bootleg Scitex machines IDF used for printing maps. While we had the machines, we didn't have a proper driver that could take a color image, separate it into channels and instruct the machines to produce the films. So, I'd produce PS files from, eg. Photoshop (also bootleg...) and then edit the PS files by hand to match the requirements from the Scitex machines.
I wasn't a programmer by training, and doing all this stuff absolutely felt like magic. Something I will never experience with computers again :'(
I really liked developing in PostScript within NeWS... had quite a lispy interactive feeling to it.
It was perfectly usable on a early '90s Sun Workstation so I'd love to know what performance would be like on the vastly faster machines we have now.