Developers and system administrators alike are uncovering the true power of XML, the Extensible Markup Language that enables data to be sent over the Internet from one computer platform to another or one application to another and retain its original format. Flexible enough to be customized for applications as diverse as web sites, electronic data interchange, voice mail systems, wireless devices, web services, and more, XML is quickly becoming ubiquitous. XML Hacks is a roll-up-your-sleeves guide that distills years of ingenious XML hacking into a complete set of practi