VT100: see table            VT200: see table
    DEFINE_KEY Function: PF1-PF24

    These program function keys are defined by the remote application
    program you are using. They request attention from the
    application program and send the data entered to the host. The
    PF keys are coded by the application program to perform functions
    relating to the application. A particular PF key may be coded
    differently from one application to another. The user's guide of
    the remote application program usually defines the specific PF
    key assignments for that application program.

    To
    Implement
    This        Press This Key or
    Function    Key Combination

    PF1         PF1
    PF2         PF2
    PF3         PF3
    PF4         KP7
    PF5         KP8
    PF6         KP9
    PF7         KP4
    PF8         KP5
    PF9         KP6
    PF10        KP1
    PF11        KP2
    PF12        KP3
    PF13        EXT + PF1
    PF14        EXT + PF2
    PF15        EXT + PF3
    PF16        EXT + KP7
    PF17        EXT + KP8
    PF18        EXT + KP9
    PF19        EXT + KP4
    PF20        EXT + KP5
    PF21        EXT + KP6
    PF22        EXT + KP1
    PF23        EXT + KP2
    PF24        EXT + KP3