Movie clip symbol is an important component in Flash movie. It is a movie within a movie. It can contain many graphic, animation and sound components. We can use them to create entirely self-contained pieces of action that we want to run independently of the rest of the things on the main timeline.

Buttons are essential features of any interactive website, and they are the key to any good menu or site navigation interface.  Using buttons is such an obvious thing that we're often unaware to doing it when we're interacting with a website or software applications.

Snap to Objects rises Flash's ability to help us make our drawings more precise. This feature automatically snaps the drawing cursor to certain points as Flash anticipates what we're trying to do. For example, when we activate Snap to Objects and draw with the oval tool, the oval are drawing jumps to become a perfect circle when we get close to the shape of it.

Tweenings are of two types.Such as
1. Shape tweening :A shape tweening is a morphing operation. We can transform an original shape into a different shape by changing the position of the shape.
2. Motion tweening: A motion tweening works by changing properties such as height, width and position.

The registration point defines the true origin of the symbol. It is "where the symbol is" and the position of the registration point gets exported to the final SWF. We use the registration point to identify the very center of our symbol, because Flash will consider the center of our symbol.