Article 24 Abbreviated classification markings
United Kingdom
1.
Standardised abbreviated classification markings may be used to indicate the classification level of individual paragraphs of a text. Abbreviations shall not replace the full classification markings.
2. SECRET UE/EU SECRET CONFIDENTIEL UE/EU CONFIDENTIAL RESTREINT UE/EU RESTRICTED
The following standard abbreviations may be used within EU classified documents to indicate the classification level of sections or blocks of text of less than a single page:
TRES SECRET UE/EU TOP SECRETTS-UE/EU-TS
S-UE/EU-S
C-UE/EU-C
R-UE/EU-R