The main purpose of XML is serialization, i.e. storing, transmitting, and reconstructing arbitrary data. For two disparate systems to exchange information, they need to agree upon a file format. XML … See more

XML documents consist entirely of characters from the Unicode repertoire. Except for a small number of specifically excluded See more

In addition to being well formed, an XML document may be valid. This means that it contains a reference to a Document Type Definition (DTD), and that its elements and attributes are … See more

XML has come into common use for the interchange of data over the Internet. Hundreds of document formats using XML syntax have been … See more

The material in this section is based on the XML Specification. This is not an exhaustive list of all the constructs that appear in XML; it … See more

The XML specification defines an XML document as a well-formed text, meaning that it satisfies a list of syntax rules provided in the specification. Some key points in the fairly … See more

A cluster of specifications closely related to XML have been developed, starting soon after the initial publication of XML 1.0. It is frequently the case that the term "XML" is used to refer to XML together with one or more of these other technologies that … See more