Kind of similar to the Plato IV plasma displays: when memory is too expensive, you store data on the screen.

I went to a high school 1974-80 that was close to the University of Waterloo in Ontario Canada. Even then they were a big computer school.

Through my high school, I had access to the UW computer resources.

I remember using Tektronix's terminals at 9,600 baud direct to the mainframe. Man that was FAST!!

And the way it flashes when a line is stored is sublime.

I somehow managed to convince the VTE people to let me add Tektronix emulation to the terminal, but, it wasn't until now that I managed to get my hands on what I want to be the reference implementation - a VT240 running under MAME. I even added some BASIC programs to my MP/M emulation (under SimH) to showcase what it can do (and compare with xterm's emulation, which I don't really like).

Do you have a repo with your demos you'd like to share? I'm a Tek terminal obsessive, although my 17-year search for a real one has so far been fruitless, so it's emulators only for me.

A couple.

https://github.com/rbanffy/altair-mpm/blob/develop/TEKLINES....

This repo has a couple BASIC examples that should run on CP/M.

This other is probably more useful:

https://github.com/rbanffy/fun_with_tektronix

I'm going to enjoy this over Christmas. Thanks for sharing.