On 2020-Dec-14, at 1:26 AM, ben via cctalk wrote:
Often for data input one could use over strike
characters for input. Not EQ might be = BS | Did any video display terminals
repeat the same effect?
Yes. Coincidentally I've just been refurbishing one - a Teleray 3931.
It's an ASCII/APL terminal, overstriking was included for the APL mode.
http://madrona.ca/e/teleray3931/index.html
Note the screenshots in APL mode.