plane of projects, documents, contacts, video, and interactive programs. One of the instances of this project was called Spatial Dataland.

Another GUI environment of the '70s, which used the zooming idea was Smalltalk at Xerox PARC, which had infinite desktops (only later named such by Apple Computer), that could be zoomed in upon from a birds-eye view after the user had recognized a miniature of the window setup for the