Extensible Markup Language (XML) is emerging as the format of choice for a variety of types of data, especially documents. With its ability to tag different fields, XML makes searching simpler and more dynamic, turning enterprise documents from recycling fodder into data mining gold. Because XML content is liberated from presentation format - which independent style sheets specify - XML enables the extensive reuse of material. This allows enterprises to turn the same content into press releases, white papers, brochures, presentations and Web pages. For enterprises trying to meld incompatible systems, XML can serve as a common transport technology for moving data around in a system-neutral format. In addition, XML can handle all kinds of data, including text, images and sound - and is user-extensible to handle anything special.