Mention on this man page the existence of the grub-rescue-pc package,
and the difference between this command and that package.
Please mention it right there on the man page and not just only in the
reply to this message.

Also there on the man page do give an example of SOURCE that one could
use right there in one's running Debian system -- to perhaps produce the
same stuff that grub-rescue-pc has. Or mention why not.