depending on local practice. The admin department normally controls the serialization of correspondence for the activity.

The date is typed in day-month-year order; for example, 1 June 85. A complete set of senders symbols might look like this:

Correspondence is dated with the date on which it is signed. The date may be typed or stamped, according to local practice.

CLASSIFICATION. - If a letter is classified, the appropriate designation, TOP SECRET, SECRET, or CONFIDENTIAL, is typed in capital letters at the left margin two lines below the date in the sender's symbols.

In addition to the typed classification, the classification is stamped in the center of the top and bottom margins. When practicable, the stamped lettering is in red. For further instructions regarding preparation of classified correspondence, refer to the latest edition of the Department of the Navy Information and Personnel Security Program Regulation, OPNAVINST 5510.1.

When the term Top Secret, Secret, o r Confidential is used in the body of correspondence to denote a classification category, only the initial letter is capitalized. The format of a classified letter is shown in figure 2-10.

Figure 2-10. - Classified Naval Letter.