This part of ISO/IEC 10166 specifies the Document Filing and Retrieval access protocol. It specifies the Abstract Syntax of the Document Filing and Retrieval access protocol, how the Document Filing and Retrieval access protocol supports the Document Filing and Retrieval Abstract service as defined in ISO/IEC 10166-1, the mapping of the Document Filing and Retrieval access protocol onto the services used, the requirements for conformance with the Document Filing and Retrieval access protocol.