To spring or not to spring in Adobe Flash Professional CS5

In Flash Professional CS5 you can now add springiness to any IK Bone in an armature. The Strength (stiffness of the spring) and Damping (rate of decay of the spring effect) properties of bones give real physical movement by integrating dynamic physics into the IK Bones system. However, it may be desirable to turn off Spring for bones without having to set both values to zero on every bone. To do this, select the Timeline layer that the armature is in to reveal an Enable checkbox for Springs in the Properties panel.