The document discusses requirements for maintaining a Design History File (DHF) for medical devices. A DHF is a compilation of records that describes the design history of a finished medical product. It must contain or reference records demonstrating that the design was developed according to the approved design plan and regulatory requirements. The DHF includes documents such as design plans, specifications, validation data, and draft regulatory documents to show that requirements were met. Procedures outline general maintenance of the DHF, including storage, version control, and ensuring confidentiality throughout the design process.