Mockup 360 needs the ability to allow the user to select or filter the parts that are included in the clash detection analysis. Workflow example: Customer imports a model that includes many o-rings and seal type components. In the modeled configurations, the o-rings and seals will commonly be in interference, but compressed in their physical installed state. If all of these components are included in the clash analysis, this will create a large number of interferences that are not relevant to the scenario.