On 30 May 1996, Kai Henningsen wrote:
>Actually, I seem to recall that the reason for ed is scripts, not humans.
>From the ed(1) man page:
-s Suppresses diagnostics. This should be used if
ed's standard input is from a script.
and
H Toggles the printing of error explanations. By
default, explanations are not printed. It is rec-
ommended that ed scripts begin with this command
to aid in debugging.