Mark,
 
1. I cannot  assume that people won't send 1-line  messages starting with
   the word  'FOR', for  example. This  is a perfectly  valid use  of the
   list.
 
2. Most people have a 'signature' blurb  which they append to the text of
   all their notes.  I have seen a lot of  SUBSCRIBE requests followed by
   such a signature. The message is no longer a 1-liner then.
 
Making this change to LISTSERV would be the same thing as modifying XEDIT
to execute (via  SVC 202) any file  line that you have typed  and that is
also a valid CMS command, on the basis  that what you wanted to do was to
execute the command but you forgot to press ENTER before typing it and it
got into the  file instead of into  the command line. I  have never liked
'kludges', and prefer not to use them unless absolutely necessary.
 
  Eric