XML (eXtensible Markup Language) extends the flexibility of SGML to Web page creation. This is an introduction to the structure and syntax of XML and guides the reader through employing this evolving technology into their own Web projects. It discusses how to create document types that are easy to author, manage, share and transmit across the Web. It also explains how to extend HTML by creating tags and attributes to automate data delivery. This reference is also cross-referenced with "XML for Dummies".