1. To open the Motion Editor panel, double-click a motion tween span on the timeline, or right-click a motion tween span and choose Refine Motion Tween.
2. A property curve is the graphical representation of how a property of a motion tween changes values over time. An ease curve represents a different rate of change that you can apply to an individual property curve. Animate displays the effects of an ease curve on a property curve as a dotted line.
3. The Easing value changes the strength and direction of an ease. Easing values affect eases differently, depending on the type of ease selected. For example, the Easing value for BounceIn eases determines the number of bounces, whereas the Easing value for a Simple Fast ease determines whether the ease is an ease-in or ease-out, and the strength of the ease.
4. To change the curvature of a property curve, select the property in the Motion Editor and select Add Anchor. Click the curve to add a new anchor point and move the direction handles to change the shape of the curve at that point. You can move the anchor points up or down to change the property value, or you can move the anchor points left or right to change the position of the keyframe within the motion tween.