The software includes more than 200 customer-requested enhancements. For instance, mating technology supports complex assemblies that can include individual parts and other assemblies with predefined internal mates. User can move components within their degrees of freedom, consider real material properties, and visualize the assembly's behavior. Built-in Express Analysis indicates how T-Flex models behave before they are built. This easy-to-use firstpass stress analysis is tailored for designers and engineers.