Extensible Markup Language or XML describes the more meaningful features of an electronic document. If you know HTML or XHTML (the stricter sibling of HTML) then XML will look familiar in that they are both markup languages. An even better example is a blog feed, which is actually a more specialized type of XML.
Applications of XML
Each <tag></tag> pair that encloses each set of text in the document came from XML feed specifications agreed upon by its governing working group. But XML is so generic that it can be applied practically anywhere. Just look at how many XML markup languages are out there. These are just some of the diverse applications of XML:


