When displayed data are classified for security purposes, a prominent indication of security classification should be included in each display.
Additional Information:
Where a display includes partitioned "windows" of data from different sources, it may be necessary to label security classification separately for each window. Under those conditions, some form of auxiliary coding (e.g., color coding) might help users distinguish a window that contains data at a high security level. This practice will serve to remind users of the need to protect classified data, both in access to the display itself and in any further dissemination of displayed data.