Interesting, I have been intending to write about this topic, after discussing
it to no avail with the list manager at my host. I seem to recall that q
<listname> with conceal for *@*  _used_ to work for my list, but lately it
returns

        > q zamir-chat-list with conceal for *@*
        There is no subscription for *@* in the ZAMIR-CHAT-LIST list with the
        options CONCEAL.

I have no problem identifying hidden members - I use REV for that - but I'm
curious why the CONCEAL ...FOR *@* doesn't work as described in the manuals.
LISTSERV at my host is ver. 1.8d 2000b.  --  ed

---
Ed Agro <[log in to unmask]>
http://listserv.acsu.buffalo.edu/archives/zamir-chat-list.html