HTML

The W3C defines the specification for HTML, CSS and Javascript (a.k.a. ECMA script). This section tries to summarize/link to the relevant information that they provide.

W3C

The W3C has setup the Web accessiblity Initiative which aims to make the web more accessible to everyone. The project should follow these recommendations as best as possible.

Schema

The Schema or Data Vocabulary provides assistive information to the search engine.

DTD

The W3 Schools lists the HTML tags supported by each DTD type.