Gi'day,
        This from the listowners manual.

5.3.8. CONCEAL/NOCONCEAL
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Occasionally, a subscriber may not want his presence to be known to
someone else making a casual REView of the list. Subscribers may choose
to "hide" their subscription from the REView command by using the CONCEAL
command. Conversely, a subscriber may choose to remove this restriction
by issuing the NOCONCEAL command. Note that the list owner can always
obtain a list of all subscribers, both concealed and unconcealed, by
issuing the GET listname (NOLock) command, or by issuing a QUERY listname
WITH CONCEAL FOR *@* command.

        My question is, what does:

        "or by issuing a QUERY listname  WITH CONCEAL FOR *@* command."
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        the "With conceal for *@* command" mean ?
        Thank you,
        Dave J.