It makes me sad that those features seemed advanced, when something as complex as the Sketchpad had been created a good amount of time before.
(more here: http://en.wikipedia.org/wiki/Sketchpad)
(Note: Its not completely related, but its just that the Sketchpad seemed to me much more advanced than what had Stevy here so excited)
I can't find a source at the moment, but I remember reading more about this a few years back. IIRC it was made as a joke for an internal company conference, or something along those lines.