Use the Insert menu to add objects to your animation and to make changes to the timeline.
Mac: ⌘-F8
Opens the Create Symbol dialog box, where you name and select the symbol type (movie clip, button, or graphic).
Applies a motion tween to an object, which is great for animating movement and changing properties over time—like color, transparency and dimensions. You can use the new Motion Editor to fine-tune every aspect of a motion tween.
Creates a shape tween between adjacent keyframes. Shape tweens work only on editable shapes (not text or symbols). They're great for morphing objects from one form to another—an acorn to an oak, for example.
Creates a motion tween between adjacent keyframes (represented by an arrow on a blue background). Use motion tweens to create nonlinear motions. Motion tweens work only on symbols, grouped objects, and text blocks. While Adobe still makes classic tweens available in Flash CS5 for compatibility reasons, it's replaced them with the more versatile and powerful motion tween.
The Timeline command leads to a submenu with commands for adding layers and frames to your timeline:
Inserts a new layer in your timeline. You use layers to organize objects on the stage. For example, layers can hold elements like shapes and text. You can also create keyframes and tweens on individual layers.
Creates a layer folder. Layer folders are used to organize and group layers. By opening and closing layer folders, you can simplify the appearance of your timeline.
Windows: F5
Mac: F5
Inserts frames into your timeline. If no frame is selected, this command inserts one frame in every layer after the current position of the playhead. If one or more frames are selected, then an equal number of frames are inserted following the selection. If a position is selected on the right, outside the range of the current timeline, then Flash adds new frames up to the selected point.
Inserts new keyframes into the timeline (represented by a solid circle), similar to the Frame command. Keyframes are different from ordinary frames in that the changes and repositioning of objects in keyframes represent significant changes in the action of your animation. When you use the Insert Keyframe command, objects on the stage become part of the new keyframe.