Web sites with useful XML information abound. This section can list only a few.
The World Wide Web Consortium (W3C) published the XML 1.0 Recommendation and a large number of associated specifications for languages created in XML or, like XPath, in non-XML syntax but designed to be used with XML documents.
All W3C technical documents—full Recommendations and non-final versions of specifications—can be accessed at www.w3.org/TR/.
The following list contains URLs that will take you directly to selected W3C Recommendations for some of the XML technologies discussed in this book.