There is a nice feature for comp that I can't find in its man page. If the user's ~/.mh_profile has a Draft-folder: entry (I don't know what happens if it doesn't.) then if comp has a "-use" flag, comp takes on optional argument: A message number in the folder designated by ~/.mh_profile from which to start.
For me, "comp -version" yields
comp -- nmh-1.7.1 built 2019-12-19 17:07:04 +0000 on pad
Norman Shapiro
