From Just Solve the File Format Problem
Label encodings files are based on a U.S. Dept. of Defense standard (DDS-2600-6216-93) to allow interoperability of security level labels (such as “Classified”, “Top Secret”, etc.) to be shared between products from different vendors.
- Compartmented Mode Workstation Labeling: Encodings Format
- Oracle Solaris 11.2 man pages: label_encodings(4)
- Trusted AIX: /etc/security/enc/LabelEncodings