On Fri, Jul 15, 2016 at 6:47 PM, Paul Koning <paulkon...@comcast.net> wrote:
> I remember, around the same time, the Tektronix 4010.  But that was
> far less flexible; it could only draw, not erase, unlike the PLATO terminals.

The 4010 can erase just fine. The problem is that it can't do
selective erase, only
full-screen erase, and erasing is a slow operation.

Tektronix had other models that could do both storage and refresh
graphics, but they were even more expensive. The refresh capabilities
tended to be fairly limited.

Reply via email to