On Sat, 4 Jul 2020, Adam Thornton wrote:

> Since I find ed thoroughly unpleasant to use, having a screen editor was
> a must for me to use v7 for any length of time, and s fills that role
> rather nicely.

A boss of mine insisted that we all learned "ed", because one day it might
be the only editor available to you after a crash; he was right...