This tantalizing new feature is mentioned on the PTC website under "what's new". I can't find any information on how it's used either at the site or within WF3. Anyone know how it works or can send me to the right place to learn more?
You can create mechanism bodies and connections as a motion skeleton, then run a simple kinematic analysis to ensure that the skeleton provides the appropriate degrees of freedom. You can then create and assemble components to the motion skeleton. Motion skeletons are defined in the same way as normal assembly skeletons and include reference control settings. They do not appear in the assembly bill of materials.