Well, a long tome ago when I worked for a magazine publisher, they decided to purchase one of them new-fangled word processors. After due deliberation, they picked one. It had an inconvenient keyboard which was physically attached to the display so that there was no comfortable way to type on it, but it had one great advantage that the Editor thought was an overriding one: it would print in either red or black, so that various stages of editorial changes were apparent.

It was also slow, so after a day or so, only Xeroxed copies were ever circulated. Oh well.