Then again, could you do useful word-processing work
on a cassette-based
 machine?  Anyone who use Atari 8-bit, C64, etc. -- was this common?  I assume  
Scripsit (for the TRS-80 Model 1 and 3) was certainly available on a
cassette, with load/save of your text to cassette. It worked, but it
wasn't that practical :-)
-tony