More than half of the members of stated of international control regimes adopt two types of control: List control and Catch-all control.
List control has the list of specific goods and technologies covered by the decisions of the international control regimes. The list identified such goods and technologies by their capabilities and specifications. You need license from government when you export controlled items or technologies to any destination. Application for the license may be rejected.
All goods and technologies, with the exception of food, wood and other specified items, are subject to Catch-all control regardless of their capabilities and specifications. Exporters need to obtain license if they learn that th goods or technologies to be exported will or might be used for the development or production of WMD, or if they learn that the end user is or has been involved in the de euro production of WMD. Again, application for the license may be rejected.