Adding metadata
The HTML5 layout elements that we have explored thus far have—as we have seen—a dual function: they serve as stylable elements that can control how content is displayed, and they organize content for accessibility.
Both the style and content dimensions of HTML5 layout elements are evolving, but they already serve as tools for designing pages, and for delivering content. The example we explored earlier of selecting an article, or an article section easily for copying in an iPhone gives a taste of how this is likely to evolve in the near future.
In addition to the key layout elements explored so far, it is worth briefly noting a few HTML5 elements whose main role is to index content (even as they can be used to apply styles as well).
Defining an address
Often, one of the first things a visitor to a site is seeking is contact information—an URL if the page is not a site home page, an e-mail address, a physical address, if he or she is looking to locate the hottest underground club...