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

       /NUMERIC_KEYPAD (default)

    Specifies whether the keys of the numeric keypad are used
    to type numbers and punctuation marks (/NUMERIC_KEYPAD) or
    to enter DCL commands defined with the DEFINE/KEY command
    (/APPLICATION_KEYPAD).