Marking MessagesMessages are marked in a manner similar todocuments. They are marked with the highest overallclassification level of the information contained in themessage. Classified messages are marked to indicate thefollowing:The nature of the classification—original orderivativeThe source of classificationDowngrading instructions (if applicable)Declassification instructions (if applicable)22-7Student Notes:Figure 22-2.—Photographs, slides, and transparencies.
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