XPath Basics
A discussion of XSLT is not complete without a discussion of XPath. They are part and parcel of the larger transformation features provided for XML documents.
XPath, XML Path Language, is a specific XML-based vocabulary designed to uniquely specify portions of an XML document. That is, XPath enables you to select certain pieces of an XML document that are of interest to you. It does this through a standard syntax similar to a query language.
XSLT and XPath: Partners in the Transform Process
Consider the xml:template element again. From following the entire transform process, you know that the xml:template element is really running the show. Consider, too, how you “match” XML document nodes for template processing by using the match ...
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