The PAN command pans the entire display by column
 or by line.

 The PAN command functions in a way similar to the
 panning of a television or motion-picture camera.
 By entering a PAN command, a portion of the display
 that previously extended beyond the limits of the
 screen can be brought into view.

 Format:

        PAN UP value
        PAN DOWN value
        PAN LEFT value
        PAN RIGHT value

 Note:  The display description message at the top of the
        screen always remains stationary.

        The arrow keys may be redefined as PAN commands.
        For more information see HELP SET FUNCTION.