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Appendix C.  Microdata

Microdata is another technology that’s rapidly gaining adoption and support, but unlike WAI-ARIA, it’s actually part of HTML5. The Microdata Specification is still early in development, but it’s worth mentioning this technology here, because it provides a peek into what may be the future of document readability and semantics.

In the spec, Microdata is defined as a mechanism that allows machine-readable data to be embedded in HTML documents in an easy-to-write manner, with an unambiguous parsing model.

With Microdata, page authors can add specific labels to HTML elements to annotate them so that they are able to be read by machines or bots. This is done by means of a customized vocabulary. For example, you might want ...

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