Professional XSL takes an applied, tutorial-style approach to teaching the core fundamentals of the XSLT, XPath and XSL-FO specifications. You'll learn how to create well structured and modularized stylesheets to generate your required output, how to change, filter, and sort data, and how to incorporate other content for presentation purposes. XML is now the established standard for platform-neutral data storage and exchange, separating content from presentation. Its popularity is due to the flexibility of the language and the ability to reuse the data in a variety of ways. XSL is a key technology for working with XML, and is comprised of two parts: XSLT is the official language for transforming XML from one format to another, whether for restructuring/selectively processing the data or presenting the data for display; XSL-FO is a proposed vocabulary for incorporating information concerning how the document should be arranged for presentation. A related standard, XPath, is the language for addressing specific parts of an XML document.