If a paragraph contains only CUI content, how should that paragraph be marked?

If a paragraph contains only CUI content, how should that paragraph be marked?

• A. (CUI)
• B. (U)
• C. CUI
• D. (CUI)MARK

Answer: (A)

When a paragraph contains only CUI content, you mark it with the designation shown in parentheses at the start of the paragraph: (CUI). This practice clearly communicates that the entire text is Controlled Unclassified Information and must be handled under CUI protections. Using "(CUI)" at the beginning provides a standardized, unambiguous indicator that applies to the entire paragraph, which is essential for consistent handling and distribution controls. Using "(U)" would mislabel the content as Unclassified, which is incorrect for CUI. Writing the word "CUI" without parentheses does not follow the official marking format. Adding extra text like "MARK" after the designation is not part of the standard designation itself.

When a paragraph contains only CUI content, you mark it with the designation shown in parentheses at the start of the paragraph: (CUI). This practice clearly communicates that the entire text is Controlled Unclassified Information and must be handled under CUI protections. Using "(CUI)" at the beginning provides a standardized, unambiguous indicator that applies to the entire paragraph, which is essential for consistent handling and distribution controls.

Using "(U)" would mislabel the content as Unclassified, which is incorrect for CUI. Writing the word "CUI" without parentheses does not follow the official marking format. Adding extra text like "MARK" after the designation is not part of the standard designation itself.