The title of the video is "Viewpoint demo" or "Viewpoint: Toward a computer for visual thinkers", (1987) is also appropriate. It's a strange interface for a gr

The title of the video is "Viewpoint demo" or "Viewpoint: Toward a computer for visual thinkers", (1987) is also appropriate. It's a strange interface for a graphics/text editor, lots of weird features in the behavior. For instance the font is anything you draw onto the on-screen keyboard, and word wrapping logic uses those same graphics to decide what is graphics and what is text. The "graphical boot" at 12:15 where he shows how the interface is constructed is a bit painful to watch but fascinating. The fundamental idea seems to be that the on-screen bitmap is the only state and some of the logic, the user and processor work together on modifying it based on a few things the processor can do automatically.