What is required to determine the classification of the information when using the concept of "contained in"?

The concept of "contained in" refers to the process of identifying the classification of information based on its presence within a previously classified document. When information is said to be "contained in" another document, it is typically understood that the classification level of the original source applies directly to the information itself. Therefore, no additional review is needed to determine the classification, as the original classification covers this information inherently.

The specific nature of this classification approach simplifies the process, allowing individuals to leverage existing classifications rather than requiring them to conduct a new analysis or interpretation of the content. This is particularly efficient in maintaining the integrity and security of classified information while facilitating access for those who are authorized to handle it.