Could you satisfy a point of curiosity?
 
  I just sent a message to Autocat (my list) and got back the ack:
    Your message on topic ABC has been successfully distributed
     to Autocat (1525 subscriptions)
 
  I immediately did a review of the list and learned that we
    currently have 2280 non-concealed subscribers.
 
   Where did that 1525 come from?
 
Judith Hopkins, Listowner of [log in to unmask]
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  Bitnet:   ulcjh@ubvm