XML

Definition: (Webopedia)
XML is a markup language for documents containing structured information. A markup language is a mechanism to identify structures in a document. The XML specification defines a standard way to add markup to documents.

  • XML is a pared-down version of SGML.
  • Designed especially for Web documents.
  • It allows designers to create their own customized tags.
  • XHTML is HTML combined with concepts from XML.