VMS Help TN3270, Qualifiers, /TERMINAL_TYPE  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /TERMINAL_TYPE=IBM-3278-n

    Optional. Default: IBM-3278-2.

    IBM terminal to emulate. Enter the full specification for one of
    the following:

    o  IBM-3278-2

    o  IBM-3278-3

    o  IBM-3278-4

    o  IBM-3278-5