>   Since someone else already answered your specific question, I will
>not repeat it.  The doc that lists and explains these keywords is
>LISTKEYW MEMO.
 
Interresting.  INFO ? shows:
 
<KEYwords   (LISTKEYW MEMO   )   Description of list header keywords
                                               --------------------
I guess since they have list-specific defaults.  Where I was looking
was in LISTSERV REFCARD:
 
<SET          listname <options>                Alter your distribution options
<                       Files/NOFiles           for a given list
<                       Mail/NOMail
<                       ACK/NOACK/MSGAck
 
and in LISTSERV MEMO:
 
>SET       listname options
>                   Mail/NOMail
>                   Files/NOFiles
>                   ACK/NOACK/MSGAck
 
----------
Mark J Strawcutter                           BitNet:    MJSTRAW@IUP
Director, Systems and Data Communications    InterNet:  [log in to unmask]
Indiana University of Pennsylvania           AT&T:      (412) 357-4000
Indiana, PA   15705                          "you can't nail jello to a tree"