More Accessibility Implementation Suggestions
Check for Obsolete Content
There is no point in converting a Web page to meet Section 508 or accessibility requirements if the page is not needed at all.
Validate Your Pages to Formal Grammars
If your page has a coding error, it might not be readable by assistive technology, or even by a modern browser.
The requirement to validate against formal grammars is included in the W3C's Web Content Accessibility Guidelines.