
Both the interface and metaphor for working within Flash takes place in two hemispheres. The Timeline and the Stage. In Flash, users create in both Time (timeline; animation) and Space (stage; graphic design).
Suppose a package of carrots is put in a container to ship. The container is called a symbol in Flash. The Symbol is the container and its contents can be changed within the Symbol.
1) All objects that are to be animated need to be on their own layer.
2) All objects that are to be animated then need to be Converted to a Symbol (F8)
3) All symbols are stored in Flash’s Library, and can be used over and over. Each time a symbol is placed from the Library to the stage, it is called an Instance, and can be modified independently from other instances of the same symbol.

Any object(s) on the stage can be converted into a Symbol. When the object(s) is converted into a symbol it is automatically added to the Library. This then enables the object(s), which is now a symbol, to then be Tweened.
To make any object or group of objects a symbol: Convert to Symbol (F8)
Correct Tween

Incorrect Tween

Untweened Group of Keyframes

Rules to consider when doing Motion Tweening:
Every object must be converted into a symbol
Every symbol must be on a separate layer
When tweening between keyframes, both keyframes must have same symbol.
Rotate:
Symbols can be rotated Clockwise and Counter Clockwise. Times specifies how many times the symbol will be rotated.
Color Options: (Alpha, Tint, Brightness)
Color options can be accessed only when a symbol is selected while on its specific keyframe.
Alpha: Changes the opacity of a symbol
Tint: Changes the color of a symbol
Brightness: Enables a symbol to absorb more white or black

There are two distinct file types that Flash makes. The first, .fla is the editable flash file. It keeps all layers, tweens, keyframes, Library assets, etc. The second, .swf is a compressed, read-only, web-ready file.
To publish a movie (make a .swf file) in Flash:
After saving an .fla version, press [Option + Return] at any time to Publish a .swf file with the same name to the same folder.
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