XSLT was produced as a result of the Extensible Stylesheet Language (XSL) development effort within W3C during 1998–1999, which also produced XSL Formatting Objects (XSL-FO) and the XML Path Language, XPath.
XSLT relies upon the W3C's XPath language for identifying subsets of the source document tree, as well as for performing calculations.
XSLT stylesheets are declarative, not procedural; rather than defining a sequence of operations to execute, they define rules and other hints applied during processing, according to a fixed algorithm.
XSLT is one of the most exciting technologies to come out of the XML family.
As a programmer with more than 20 years experience with over a dozen languages, XSLT templates and default rules were not obvious to me. Over the past year or two I had looked at numerous examples trying to discern how they worked.
For XSLT to be successful it must be presented and used in a way that adopts those attributes discussed earlier (reuse of knowledge, fast start, and gradualism).
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