When an object is given to the export process, the ObjectSet application does the job of navigating through the object's structure and collecting all of its related objects.

The definition of the navigation is taken from a set of XML files known as navigation?rule files. Additionally, the ObjectSet application uses Java classes known as generators and filters to collect a set of objects that will be exported when simple navigation is not enough and some programming logic needs to be applied.

The navigation rule files reside in the folder <Windchill>\codebase\registry\ixb\object_set_handlers.