Flashthusiast

In Flash CS3, you could set easing on each keyframe in your animation to apply easing between two instances. Because there is only one instance per tween span, you cannot ease the same way using the new motion model. In order to apply an easing effect to a motion tween, you need to use a custom ease or modify curves in property graphs using the Motion Editor. Keep reading to learn how to ease between keyframes using a custom ease.

You can then edit the custom ease using the standard bezier editing controls found in other property graphs in the Motion Editor.
To apply the custom ease to a property, you select the custom ease’s name from the Ease menu in the property you want to apply it to. The property graph updates with a dashed curve that displays the actual tweened values after the ease is applied, as it does for the preset eases you can apply using this Ease section of the Motion Editor. Keep reading to learn how to create custom eases.