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

       /NAME_ATTRIBUTES[=(keyword[,...])]

    Specifies attributes for a logical name. By default, no
    attributes are set. Possible keywords are as follows:

    CONFINE    The logical name is not copied into a spawned
               subprocess. This qualifier is relevant only for logical
               names in a private table.

               The logical name inherits the CONFINE attribute from
               the logical name table where it is entered; if the
               logical name table is "confined," then all names in the
               table are "confined."

    NO_ALIAS   A logical name cannot be duplicated in the specified
               table in a less privileged access mode; any previously
               created identical names in an outer (less privileged)
               access mode within the specified table are deleted.

    If you specify only one keyword, you can omit the parentheses.
    Only the attributes you specify are set.