In the seventies "Computer lib / dream machines" by Ted Nelson covered all the hottest computer systems in North America and included among them small talk and Plato and the logo Lab at MIT and graphics at Utah and a few others.
Xerox PARC researchers visited PLATO in 1972 and when they got back to Palo Alto they implemented just about everything they saw! App generator for pictures (SD Mode), paint (charset editor), bitmap /memory graphics display (plasma panel), multiple fonts and character sets, etc!
