MsgScroll()

         Shows a message with horizontal scroll

    Syntax:

         MsgScroll( nRow, nCol, nSize, cString, cColor ) -> Nil

         nRow    : Row position
         nCol    : Column position
         nSize   : Horizontal size
         cString : Message to show
         cColor  : Message color

    Description:

         Shows a message with horizontal scroll until you press any key.

    Return:

         Nothing.

    Example:

         MsgScroll( 10, 12, 20, "Press any key to continue", "GR+/B" )