CIRCLE WITH A DOT

Ever wonder why vi uses hjkl for movement?It's not arbitrary—it's hardware history. The ADM-3A terminal had arrows printed directly on those keys.ESC was also where Tab is now. Vi wasn't designed for ergonomics, it was designed for the keyboard that existed.http://www.slackware.com/~r1w1s1/nvi.html#_curiosities#nvi #vim #vi

Also something else that I have noticed as an #OpenBSD user is that vi and nvi undo functions seem to both work the same ? I mean you can press u in both to undo and then press . to do multiple undos. Yet I thought it was only nvi that had that feature? I'll have to read up more on both to find differences.