"> The text of the manual was written using the ed text editor."
From where are you quoting this? I don't see it in TFA.
From where are you quoting this? I don't see it in TFA.
https://dspinellis.github.io/unix-v4man/v4man.pdf
> This manual was set by a Graphic Systems phototypesetter driven by the troff formatting program operating under the UNIX system. The text of the manual was prepared using the ed text editor.