VMS Help CMS, CREATE, LIBRARY, Qualifiers, /LONG_VARIANT_NAMES  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Used to create a CMS library that allows the use of long variant names.
    Use /NOLONG_VARIANT_NAMES to create a CMS library that does not allow
    the use of long variant names. /NOLONG_VARIANT_NAMES is the default.
    Use MODIFY LIBRARY to change this attribute on an existing library.