RELAX NG Schema for HTML 5: Sectioning Markup #
Headings
Heading (Rank 1): <h1>
Heading (Rank 2): <h2>
Heading (Rank 3): <h3>
Heading (Rank 4): <h4>
Heading (Rank 5): <h5>
Heading (Rank 6): <h6>
Heading Group: <hgroup>
Section Meta
Contact Info: <address>
Quotations
Block Quotes: <blockquote>