EU Secret

Protocol for sharing official "secrets" (or better classified information) uses 5 levels of restriction (or document security)
 * 1) LIMITE UE,
 * 2) RESTREINT UE,
 * 3) CONFIDENTIEL UE,
 * 4) SECRET UE and
 * 5) TRES SECRET UE.

By custom, the label is always in French (often the "UE" is dropped on document markings).