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http://docs.unity3d.com/Manual/animeditor-AnimationCurves.html

The Property List

In an Animation Clip, any animatable property can have an Animation Curve, which means that the Animation Clip controls that property. In the property list area of the Animation View, all animated properties are listed. With the Animation View in Dope Sheet mode, the animated values for each property appear only as linear tracks, however in Curves mode you are able to see the the changing values of properties visualised as a grap view.