Autodesk 466B1-05A761-1304 - AutoCAD Inventor Simulation Suite 2010 Getting Started page 42

Create a Contact Set and add members as required to simulate physical
contact between components and to determine the range of motion.
Use Positional representations to save a mechanism in various states such
as maximum and minimum extension.
Use Inventor Studio to animate simultaneous or sequential movement.
36 | Chapter 2 Create Digital Prototypes