Sufficient and Advisory Techniques - For each of the guidelines and success criteria in the WCAG 2.2 document itself, the working group has also documented a wide variety
                     of techniques . The techniques are informative and fall into two categories: those that are sufficient for meeting the success criteria and those that are advisory . The advisory techniques go beyond what is required by the individual success criteria
                     and allow authors to better address the guidelines. Some advisory techniques address
                     accessibility barriers that are not covered by the testable success criteria. Where
                     common failures are known, these are also documented.