VMS Help CMS, SHOW, GROUP, Qualifiers, /CONTENTS[=n]  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Lists the group name and creation remark, along with the names of
    any elements or groups contained within the specified group.

    You can specify an integer value (n) that directs CMS to display
    nested groups up or down to and including the level indicated by
    n. When you specify /CONTENTS without a value, CMS displays one
    level of contents. You can also specify /CONTENTS=ALL to display
    all levels of contained groups.