XML

XML stands for Extensible Markup Language and plays a crucial role in the exchange of information and data on the web. It is designed to store and transport data and is both human and machine-readable. It is structured into working groups, that can be categorized as follows: XML tutorials are also offered by W3Schools.
 * Coordination group
 * Core working group
 * XSLT working group
 * Interchange working group
 * Processing model working group
 * Query working group