What is necessary to determine the classification of the information under the "contained in" concept?

To determine the classification of information under the "contained in" concept, it is essential to recognize that when a document is classified, all the information within that document inherently retains the same classification level. The "contained in" concept relies on the classification of the parent document to dictate the classification of its individual elements, allowing for straightforward classification without necessitating additional interpretation or analysis.

This understanding is critical because the underlying premise is that the classification status flows from the original document to all contained elements. Therefore, if the overall document is classified, its contents are automatically classified, making the process of determining classification simpler and more direct without needing further assessment or external validation.