I started using vi in 1981

I wrote a cut down version of it for my first job (in 1983) on their proprietary hardware, everyone was staggered to see a visual editor, everything else they had was line-by-line (and not visual - ie no arrows keys to change text) which were so inappropriate to edit the 20,000 line source code they were involved with! It was written in their proprietary coding language on their proprietary OS. (hint: it was a government contracted manufacturer)

My vi didn't have most of the ex stuff (ie the : commands -like s/// and any of the settings) and I didn't use curses since this was not under UNIX, and their terminals were specific and their own. But I did write functions to do the curses-like things (eg move(), deleteline(), etc) of course! It did have most of the keyboard actions.

What fun!

I did implement ":next" for next file (although I could do :n3 for skip 3 files forward) and ":rewind" but also implemented ":back" too (or :b2 for back two files in the arg line). I wish real vi had that, maybe it does? and I don't mean CTRL+^ or :n# - I mean a way to ":back", prehaps a few times as I go through some files on the arg line, if I wanted.
Maybe ":prev" would be a better name for it.

PS I have in my .exrc file:
      map q :n^V^M