XML is a language for defining a set of markers, called tags, that are applied to a data set or document to describe the function of individual elements and codify the hierarchical relationships between them. Tags look much like Hypertext Markup Language (HTML) tags, but XML is actually a metalanguage used to define tags that best suit the kind of data being marked.
The following sections discuss XML and NETCONF:
For more details about XML, see A Technical Introduction to XML at http://www.xml.com/pub/a/98/10/guide0.html and the additional reference material at the www.xml.com site. The official XML specification from the World Wide Web Consortium (W3C), Extensible Markup Language (XML) 1.0, is available at http://www.w3.org/TR/REC-xml.