File:Mouse tray.png

Screen shot taken from Douglas Engelbart's initial demonstration of mouse usage, showing an indented area of the workspace on the computer that is reserved for the mouse.

http://video.google.com/videoplay?docid=-8734787622017763097

Video (40 years old) has been released by original copyright holders onto Google video. While referred to as a source in Mousepad, the shot is fleeting and embedded. As such it is a screenshot of a demonstration of new technology, used for promotion.

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