Masking

Learn layer masking to explore yet another way to create a spotlight that follows the mouse around the Flash stage to reveal your movie.

Apply shape tweens to your masks to make them change shape and reveal different areas of your Flash movie.

You can use motion tweens on the objects on a mask layer just as you would on any other Flash symbol.

Simulate the effect of a camera's iris diaphragm using Flash's mask layers and a shape tween.