On Wed, May 13, 2015 at 2:12 AM, Eric Smith <spacewar at gmail.com> wrote:
TOPES was used at least up until the divestiture.
There was a
replacement system under development called MEGS, but I don't know
whether it was completed and deployed.
According to a book that is partially online in Google Books, it was
replaced by MUGS, "Mini Unix Graphics System," running on 11/780s or
3B20s.
Not a lot of info out there about either system.