HTML 5 accessibility principles
The W3C HTML Working Group developed a series of principles for HTML5 in the areas of compatibility, utility and interoperability.
To support existing content and allow concepts to degrade gracefully.
To make sure that HTML can be used effectively for its many intended purposes.
To improve the chances of HTML implementations being truly interoperable.
To make sure that all HTML features are designed for universal access.
Further information can be found at: