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What's Next

In this chapter you have learned how XML can provide document authors with the freedom to give meaning to their document structures by giving them names that correspond to their purpose or contents. A parser or other user agent won't know what these mean or even particularly "care" about them, but data management systems can manage content much more easily searching for <foo>, rather than a generic <p> structure that has the text string "foo" inside of it.

We've also taken a close look at the definition of well-formedness, both from an XML viewpoint and specifically the requirements for XHTML. Conformance to a language can go further than well-formedness, by validating against a DTD or a schema.


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