Interesting to read it originated as part of PLATO. I used notes at a company in the early oughts. This company was a big user of ibm mainframes. It was bizarre and although it was purported to have all this capability I couldn’t figure out how to do anything with it; like access lotus script. As an inveterate tinkerer, it frustrated me, I assumed I didn’t have permissions or something.

I did a second stint at the same company in the teens and they had moved to outlook.