Teamcenter preferences are settings stored in the Teamcenter database that provide a mechanism to control and define Teamcenter behavior by letting you modify the interface, set default behavior, and specify default values. Use Teamcenter preferences to configure many aspects of a session of application behavior, such as how assemblies are revised, whether extension rules are bypassed for specified operations, and which Teamcenter objects are displayed in integrations. Each application may have associated preferences. They are similar to environment variables, except that they operate with several layers of permissions