Library /sys$common/syshlp/nclhelp.hlb set, session_control, application, node_synonym  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Default: False         Value: True or false

    Default form in which the remote node name is passed to the
    application.

    false      The full node name is used.

    true       The node synonym is used; if no synonym is available,
               the full name is used.

    Example:

    set session control application mail node synonym true