The Extend Tweening Engine is an Action Script animation engine that can be used to ease the work of creating and managing animations for just about anything: filters, colors, positions and sizes, etc. Is a robust engine that can be used by everyone: artist, beginner coders, intermediate flash users and advanced programmers. You can choose for the following reasons: it is easy to use, it gives you the liberty to tween anything you want, it can be used with any kind of MovieClip, it can be used by people who are new to Action Script as well as by people who are used to develop with Flash and Action Scrip, it introduces you with a Tween Management Class (Tween Manager) that allows you to control and correlate how the tweens in your Tween Manager behave in a determined amount of time, it offers better event handling compared to the Macromedia Tween Class and better reverse.