At 2022-06-06T11:40:42+1000, Warren Toomey via TUHS wrote:
Hi all, we have a new addition to the Unix Archive
at:
https://www.tuhs.org/Archive/Documentation/Manuals/Unix_4.0/
This is the documentation for Unix 4.0 which preceded System V. The
documents were provided by Arnold Robbins and scanned in by Matt
Gilmore.
Thank you all very much for this. As an amateur *roff historian I think
among the other treasures here is a January 1981 addendum to Ossanna's
1976 Nroff/Troff User's Manual. This would be _after_ Kernighan's
rewrite of the code to become device-independent troff. Indeed, the
only troff (cf. nroff) device documented as supported is "Wang
Laboratories' C/A/T phototypesetter". Not the Linotron, not the
Autologic, not the Imagen.
This is the earliest attestation of device-independent troff I'm aware
of, and moreover it's _documentary of the system_. Great stuff!
(I've effused about this on the groff list already.)
Regards,
Branden