Article 24U.K.Abbreviated classification markings
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.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 SECRET
TS-UE/EU-TS
SECRET UE/EU SECRET
S-UE/EU-S
CONFIDENTIEL UE/EU CONFIDENTIAL
C-UE/EU-C
RESTREINT UE/EU RESTRICTED
R-UE/EU-R