I happen to
have a VT100 series Technical Manual. Also a VT640
manual (also known as a Retrographics board). 
 The VT640/Retrographics upgrade makes an *extremely* usable graphics
 terminal.  My favorite plotting package, PLOTDATA (aka PHYSICA) uses
 it, and the package is available for VMS and many Unices at
   ftp://ftp.triumf.ca/physica/ 
 
Hmm, all i ever used it for, was to download raster images, yet still using
the regular VT100 capabilities. I used to put a head shot of Mr Spock
in the upper right corner of the screen, it really freaked people out...
"a VT100 cant DO that! How did you Do That???"
Fear programmers.
-Lawrence LeMay
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