Was it this system? I used these terminals at U of Illinois in the late 80's, but I only remember using them to take my physics tests. I don't remember ever u

Was it this system? I used these terminals at U of Illinois in the late 80's, but I only remember using them to take my physics tests. I don't remember ever using them for studying or interactive learning. https://grainger.illinois.edu/news/magazine/plato https://grainger.illinois.edu/news/magazine/plato