/sys$common/syshlp/helplib.hlb CMS, SHOW, ACL, Command Parameters  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 object-expression

    Specifies the CMS library object whose ACL is to be displayed.
    Wildcards and a comma list are allowed.

    The object name depends on the object type (see the /OBJECT_TYPE
    qualifier). For example, if the object type is CLASS, the object
    name is the name of a class in the CMS library. The same principle
    applies to elements and groups. If the object type is LIBRARY, the
    object expression must be a list of one or more of the following
    keywords:

       ELEMENT_LIST
       CLASS_LIST
       GROUP_LIST
       HISTORY
       LIBRARY_ATTRIBUTES

    These keywords are called object subtypes. You can abbreviate
    object subtypes. Wildcards are not allowed.

    The object name can also be the name of a CMS command. If /OBJECT_
    TYPE is specified as COMMAND, SHOW ACL displays the ACL for the
    given command.