If I have a list that has been set "Concealed= No" for a while and
then change it so that it *is* concealed, how long does it take (if ever)
for the rest of the listserv servers to "forget" about it?
 
Lee Silverman     [log in to unmask]      http://www.netspace.org/users/lee/
Network: Any thing reticulated or decussated, at equal distances,
         with interstices between the intersections.  -- S. Johnson