>
>|With Listserv 1.8c on an IBM VM/CMS  system, how can subscribers to a list be
>|prevented  from ever  selecting  the CONCEALED  subscrpition  option? On  one
>|particular list, the owner (not me) does  not want anyone to have a concealed
>|subscription  entry.
>
>That's because how NOT to do something is NOT documented ;-)
>
>LISTSERV(R) offers no native mode operation to inhibit personal settings.
>The only thing you could do is to manually or automatically issue
>
>QUIET SET listname NOCONCEAL FOR *@*
>
>at some CPU expense.  Of course this doesn't inhibit folks from subscribing
>with phoney names or even * * or anonymous.

The way you inhibit folks from subscribing with phony names, * *, or
anonymous is to put this in the list header:

*Subscription= By owner

and then you can control who is on your list.  Of course, even this is not
foolproof, but it is better than nothing I suppose.

Glenn