VMS Help DCE_CDS, cdscp, DESCRIPTION, Using Wildcard Characters  *Conan The Librarian (sorry for the slow response - running on an old VAX)

   When entering a name in show and list commands, you can use wildcard
   characters in the rightmost simple name (the name to the right of
   the last slash (/) in the full pathname).  The asterisk (*) matches
   0 or more characters in a simple name.  The question mark (?)
   matches exactly one character in a simple name.

   When you use an asterisk or a question mark as a normal character in
   the rightmost simple name of a show or list command, escape it with
   a backslash (\* or \?).  Otherwise, the character is interpreted as
   a wildcard.

   You cannot use wildcard characters in show clerk and show server
   commands.