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@khleedril @cstross @lonjil @hko Back at Rutgers I loved playing a game called "xbattle" which was implemented as 1 game process opening windows on a bunch of different machines (listed on the command line) so people could play against each other in a shared map.

If you could trivially do that in 1992 on a LAN, one computer with 4 monitors does not require significant new plumbing from X11.

Alas people wrapped the protocol with layers of shared libraries, each with "simplifying assumptions"...