Final answer:
Certain phrases like 'In witness whereof, the undersigned, being duly authorized,' or 'authorized representatives' denote that a person is authorized by a CO to sign a document. Signing statements by executives serve a similar purpose in a legislative context. Historical documentation may include phrases like 'This is to certify' to indicate authorization.
Step-by-step explanation:
When a Contracting Officer (CO) authorizes a person to sign a document, certain formal language is typically used to indicate such authority. Phrases such as In witness whereof, the undersigned, being duly authorized, or authorized representatives suggest that the person signing has the official sanction to execute the agreement on behalf of the CO or the entity represented. The presence of signatures and certification language indicates the formal agreement and consent of the parties involved.
Furthermore, signing statements are used occasionally by executives, such as presidents, to outline their interpretation of legislative texts. These statements, including upon the act of signing a bill into law, serve to clarify how the legislation will be enforced or understood, establishing a record of the executive's intent.
In historical documents, authorization may also be evidenced by statements such as This is to certify or the subscription of names as seen in foundational documents like the Mayflower Compact.