<oListBox>:scroll(<nMethod>) --> self

        <nMethod> indicates the manner in which the scroll operation is
        carried out.  A call to ListBox:scroll() is typically issued in
        response to ScrollBar:hitTest returning that a hit has been
        established.

        ListBox:Scroll Argument Values
        ---------------------------------------------------------------------
        Value     Constant            Result
        ---------------------------------------------------------------------
        -3074     HTSCROLLUNITDEC     Scroll down one line
        -3075     HTSCROLLUNITINC     Scroll up one line
        -3076     HTSCROLLBLOCKDEC    Scroll down one window
        -3077     HTSCROLLBLOCKINC    Scroll up one window
        ---------------------------------------------------------------------

        scroll() is a method of the ListBox class that is used for scrolling
        the contents of a list box up or down.