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.

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":

https://news.ycombinator.com/item?id=37201231