*The signs on the U.S.S. Enterprise represent a standard of visual aid which is maintained throughout the Federation to assist persons in expediently fulfilling whatever task may be at hand. The doors throughout the ship are usually coded with a six-digit identification number ("12-3456", for example), indicating the deck number and the sector and compartment number. Descriptive text is also used to aid in the identification of a particular room's use. A condensed typeface is used to allow a great deal of information to fit easily into a limited space. Ship exterior markings are generally set in a bold, extended typeface for easy identification at greater distances. *Source: Back of card