Bitmap display is media compatible with dot matrix or laser printers.
I think editors have to come out of a certain kind of community.
I remember right after Carter got elected, I was sitting in my apartment in Albany, CA, on a Saturday listening to people call Carter and ask stupid questions while I designed the screen editor.
Document preparation systems will also require large screen displays.
I think it killed the performance on a lot of the systems in the Labs for years because everyone had their own copy of it, but it wasn't being shared, and so they wasted huge amounts of memory back when memory was expensive.
I got tired of people complaining that it was too hard to use UNIX because the editor was too complicated.
But no, I don't generally have trouble with spelling mistakes.
I think the hard thing about all these tools is that it takes a fair amount of effort to become proficient.
I had almost rewritten all of the display code for windows, and that was when I gave up.
The fundamental problem with vi is that it doesn't have a mouse and therefore you've got all these commands.
Interleaf is very nice. I expect there to be a lot of competition for programs like that.
The point is that you want to have a system that is responsive.
That lack of programmability is probably what ultimately will doom vi. It can't extend its domain.
The reason I use ed is that I don't want to lose what's on the screen.