Message / Action / User-PM

 Has 2 purposes.                                       
                                                       
 1. Received PMs are moved to the PM Archive           
 Newsgroup of the sender. That is, they disappear from 
 your PM, and even if on "pending", will not show up   
 in a search-pending.                                  
                                                       
 2. A copy of the selected newsgroup message is        
 sent to the PM-Archive for the sender. You can use    
 this for example to archive messages to which you     
 have replied together with your reply.