The HTML 5 specification introduces new block elements that can be used to structure documents:
<section>: represents a document or application section (a content column for instance),<article>: represents an independent piece of content inside a document/section (a blog entry for instance),<aside>: represents a piece of content not directly related to the displayed content (typically a sidebar),<header>: represents a document header,<footer>: represents a document footer,<nav>: represents a block of navigation links (typically a blog navigation bar),<dialog>: can be used to render a chat session, using complementary<dt>(talker) and<dd>(quote) tags,<figure>: can be used to provide textual information about an embedded content,<address>: represents a document/section contact block,