VMS Help NCS Command, Command Qualifiers, /ONLY  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  /ONLY=(definition-module-name[,...])

   Use this  qualifier  with  the  /LIST  qualifier  to  specify  which
   definition modules in the NCS library are  to  be  listed.  If  you
   specify more than one definition module,  separate  the  definition
   module names with commas, and enclose the list in parentheses.

   You may use wild card characters to specify the definition modules.