-- Handy quick reference command guide quickly shows readers popular XML commands.
-- CD contains ready-to-use code from the book.
XML Extensible Markup Language) is a pared-down version of SGML especially designed for Web documents and is a variant of HTML. Unlike HTML, which has a predefined vocabulary, XML allows developers to define their own vocabulary for data, such as price and product. It allows designers to create their own customized tags, enabling the definition, transmission, validation, and interpretation of data between applications and between organizations. The result is more efficient data exchange and better Internet searching capabilities.