27. schema

<schema>
  Content: location | noNamespaceLocation | (location noNamespaceLocation)
</schema>

<location>
  Content: list of anyURI pairs
</location>

<noNamespaceLocation>
  Content: anyURI
</noNamespaceLocation>

Use the W3C XML Schema specified by this element to constrain the document.

The content of child element location is identical to the one of standard attribute xsi:schemaLocation. The content of child element noNamespaceLocation is identical to the one of standard attribute xsi:noNamespaceSchemaLocation.

Note that

the grammar specified this way is used and the W3C XML Schema specified in the configuration file is ignored.

Example:

<schema>
  <location>http://www.w3.org/1999/xhtml
            xsd/5.2/xhtml5.xsd</location>
</schema>