Creates an invisibility
               mask from curves.
         Ensure that you are working
            on a paint layer. Invisibility mask shapes cannot be created on
            shape layers.
         
         
            - Choose Paint > Shape > Make Invisibility Mask Shape   from the palette. from the palette.The Shape
                     Editor opens, and you are prompted to
                
- Click each curve to include in the shape.
               (Make sure that you click the part of the curve that you want to
               include in the shape boundary.)
               
                  NoteDo not drag a pick box around complex curve
                     structures, or the shape may not appear as you expect.
                   
 The curves are highlighted.
                  You are prompted to
                Select another curve. If done, press ACCEPT button. 
- Click the Accept button.
               The curve becomes an
                  invisibility mask. By default, the outline is turned off, and the fill
                  area, which acts as the invisibility mask, is outside the
                  curves.
                
- If you want the fill area (invisibility
               mask) to be inside the curves., set Fill to Inside in
               the Shape Editor.
               The Shape
                     Editor lets you modify several parameters of the Shape
                  such as color, opacity, and so on. 
                For a description of each option, see Windows > Editors > Shape Editor.
                
            NoteTo
               create certain shapes, you may need to select the curves that define
               the shape in more than one location. Simply select each curve segment
               that forms a boundary of the shape region, even if you must select
               the same curve more than once. See 
Create a shape for
               more details.