Four Point Transparency consists of four points, arranged as a parallelogram, each with its own transparency level. The transparency of the object is defined by the graduations between these transparency handles. In the example, the top-left and bottom right points (shown as black spots) are not transparent and the top-right and bottom-left points are 100% transparent. Four point transparency is enormously flexible and ideal for drawing highlights and complex looking transparency effects. See the Transparency Overview for more details.