On Sun, Sep 20, 2020 at 3:24 PM Mike Begley via cctalk
<
cctalk at classiccmp.org> wrote:
There's also the windowing system used on the
AT&T 3B1 (AKA Unix PC, AK
PC7300), which I think was called MGR. It may have also been ported to
other systems as well. When I had one of these machines it was adequate,
although terribly slow on a 512K system.
MGR was not the Unix PC's native GUI environment; I'm not sure what that
was named. MGR was an open source environment that could be installed on
the Unix PC.