Guideline 8 : Implement specifications that benefit accessibility
Checkpoint 8.2 : Conform to specifications
Use and conform to either
W3C Recommendations when they are available and appropriate for a task, or
non-W3C specifications that enable the creation of content that conforms at level A or better to the Web Content Accessibility Guidelines 1.0.
Sufficient techniques
When a requirement of another specification contradicts a requirement of the current document, the user agent may disregard the requirement of the other specification and still satisfy this checkpoint.
Normative inclusions and exclusions
A specification is considered "available" if it is published (e.g., as a W3C Recommendation) in time for integration into a user agent's development cycle.
The user agent is not required to satisfy this checkpoint for all implemented specifications; see the section on conformance profiles for more information.