Jon - Good catch and that is a good reminder.
Warner - You need to add troff and the C/A/T to your timeline.  They were
too important.   What I don't remember, although Doug or Steve might, was
the original troff 4th or 5th edition?  bwk did ditroff, later with the
addition of the APS5.

FWIW: It was for 6th edition and post 1BSD that Tom Ferin did the original
vcat(1) work at UCSF's PDP-11.   It would get spread later to the world as
part of one of the BSDs, but the original emulation of a C/A/T4 with a
plotter support came from Tom, his graphics lab and the earlier work with
the Hershey fonts that CMU and Stanford had done to support the XGP for the
PDP-10s.  But that was super important for why people wanted UNIX early on.


On Fri, Sep 13, 2019 at 4:24 PM Jon Steinhart <jon@fourwinds.com> wrote:

> Not sure about the last bullet on slide 18.  I think that it would be more
> correct to say "format" instead of "typeset" since I don't think that the
> C/A/T came out until 1972.  I guess it all comes down to whether or not you
> consider nroff on an ASR-37 to be typesetting.
>
> Jon
>