VAR WindMin : Word;

        When the Window procedure is called the two variables WindMin
        and WindMax are given the minimum and maximum values of that
        window.  The values are of type word with the X value being
        equal to Lo(WindMin), and the Y value being equal to the
        high bit or Hi(WindMin).

                                   NOTE
        The upper left hand corner of the screen for WindMin will return
        (0,0) whereas the upper left hand corner of the screen is (1,1)
        when using the GotoXY and Window procedures.