Recommended additional information includes: A list of success criteria beyond the level of conformance claimed that have been
                     met. This information should be provided in a form that users can use, preferably
                     machine-readable metadata. A list of the specific technologies that are " used but not relied upon ." A list of user agents, including assistive technologies that were used to test the
                     content. A list of specific accessibility characteristics of the content, provided in machine-readable
                     metadata. Information about any additional steps taken that go beyond the success criteria to
                     enhance accessibility.