things which a person knowingly creates himself. A mock-up is more than a mental picture; it is a self-created object which exists a s itself or symbolizes some object in the physical universe. The term was derived from the World War II phrase for miniature models that were constructed to symbolize weapons (airplanes, ships, artillery, etc.) or areas of attack (hills, rivers, buildings, etc.) for use in planning a battle. —Scientology 0-8 Glossary (app 11.7.90)