Description

   The DIRECTORY command provides a listing of the available mailing
   lists.

   The list-spec parameter is optional and, if omitted, defaults to
   "*". Generally, there is no need to use this parameter unless you
   are interested in a specific mailing list. For instance, if you
   merely want to know if there is a mailing list about zeugmes, you
   might use the command

   DIRECTORY/LIST *ZEUGME*

   This will provide you with the names of any mailing lists which
   contain the phrase "zeugme" in them. Note that just because a
   mailing list is available does not necessarily mean that you can
   subscribe to it. The site might have established restrictions
   governing who can or cannot subscribe to some or all mailing
   lists.