Final answer:
The document is a Code Compilation of the CFR, including section numbers, statuses, and Federal Register references for changes. The CFR is a codification of rules published by U.S. agencies, and changes in the regulations are easily trackable in its electronic form.
Step-by-step explanation:
The document in question seems to be a Code Compilation that includes the CFR part and section numbers, a description of its status (such as amended, confirmed, revised), and the Federal Register page number where the changes can be found.
When regulations are amended or updated, it is indicated within the electronic version of the CFR. A red square usually marks the change within the text, providing an easy reference for anyone reviewing the regulations to identify updates or modifications to the rules since the original publication.