The XPointer Specification
XPointer is a complex specification for addressing into the internal structures of XML documents. In XLink, the resource can be referred to by a Uniform Resource Identifier (URI). A URI is a URL followed by an optional query and then an optional fragment identifier. XPointers are fragment identifiers that can be used in conjunction with a URL.
Note
At the time of this writing, the XPointer specification is a candidate recommendation. The latest specification can be found at http://www.w3c.org/TR.
XPointers operate on the tree structure defined by the elements and markup of an XML document. From the discussion of the Document Object Model in Chapter 3, you should know that an XML document contains seven types of nodes: ...
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