>  (...)                                                          Part
>of my problem is that I don't know what determines when one uses
>FULLhdr, FULLBsmtp, IETFhdr, SHORThdr, or SHORTBsmtp.  Can someone
>enlighten me or point me to a relevant, clearly-written document?
 
Assume that if they change to DUALHDR, they do so FROM the list
default.  Check the list header.  If they aren't there, then
LISTSERV assume some default.  Since I don't know what that is,
you could just unsub/sub/q.
 
Here's an LDBASE Job that will recover the "relevant, (clearly?)-
written document"  (Don't let Natalie critique it -- I hardly passed
English 101.)  Send it to LISTSERV@searn (searn.sunet.se)  --
 
/* --------------------- clip and save ---------------- */
//ListSrch JOB Echo=no
Database Search DD=Rules
//Rules DD *
S * in lstown-l from 92-08-10 to 92-08-10 where sender contains pmw1
print
/*
//  EOJ
/* --------------------- clip and save ---------------- */
 
Of course you could replace the "S" line with
 
S FULLhdr or FULLBsmtp or IETFhdr or SHORThdr or SHORTBsmtp in lstown-l
 
/Pete ([log in to unmask]) -- co-owner LDBASE-L, TQM-L, et -L