[AceJohnny2]

For reference, Simonyi worked on the legendary Xerox Alto, where he wrote Bravo, the first WYSIWYG editor.

He later joined Microsoft in 1991, where he started Word.

[gaius]

He is also the inventor of so-called Hungarian Notation https://en.wikipedia.org/wiki/Hungarian_notation

[mattgrice]

1981, not 1991