Flash Timeline
Frames and keyframes
Like films, Flash documents divide lengths of time into frames. In the Timeline, you work with these frames to organize and control your document’s content. You place frames in the Timeline in the order you want the objects in the frames to appear in your finished content.
A keyframe is a frame in which you define a change to an object’s properties for an animation or include ActionScript code to control some aspect of your document. You can also arrange keyframes in the Timeline to edit the sequence of events in an animation. Flash can tween, or automatically fill in, the frames between keyframes in order to produce fluid animations. Because keyframes let you produce animation without drawing each individual frame, they make creating animation easier.
Simplifying frames means that nothing changes and keyframes bring something new. It can be a new shape or same as previous but placed in another location.
