I just saw a video of Douglas Engelbart's demo of his group's NLS system that was given in San Francisco in 1968. I was stunned at how this demo presages much of today's computer environment, including the first mouse, (programmable) word processing, hyperlinking and groupware. Watching this video and observing the codes he inserts to affect presentation, I was overcome with a feeling that I was watching the genesis of many things, not the least of which is SGML- style markup languages. Though the SGML connection may be tenuous, I cannot help but imagine that this "being in the air" influenced SGML.

The video is about an hour and a quarter long, but if you're into this sort of history, it's well worth the time.

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

Also: http://sloan.stanford.edu/mousesite/1968Demo.html

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