SET(ACTIVE_AREA)

 Designates the specified area as the "active area" in a VAXTPU
 window.  The active area is the region in the window in which VAXTPU
 ignores
 movements of the pointer cursor for purposes of distinguishing clicks
 from drags.  When the user presses down a mouse button,
 VAXTPU interprets the event as a click if the upstroke occurs
 in the same active area as the down click.
 If the upstroke
 occurs outside the active area where the down click occurred,
 VAXTPU interprets the event as a drag operation.

 Syntax

    SET (ACTIVE_AREA, window, column, row [,width, height])

 Parameters

    window               The window in which you want to define the active
                         area.

    column               An integer specifying the leftmost column of the
                         active area.

    row                  An integer specifying the topmost row of the
                         active area.
                         If you use 0, the active area row is the status
                         line, and
                         you cannot designate an area height greater than
                         1.)

    width                an integer specifying the width in columns of the
                         active area.  Defaults
                         to 1.)

    height               An integer specifying the height in rows of the
                         active area.  Defaults
                         to 1.)

 Example

    The following statement defines an active area two columns wide and
    three rows high in the current window:

    SET (ACTIVE_AREA, CURRENT_WINDOW, the_column, the_row, 2, 3);