eXtensible Markup Language

XML (eXtensible Markup Language) is a "programming language/specification pared down from SGML?, an international standard for the publication and delivery of electronic information, designed especially for web documents." (MultiLingual)

XML is "a markup language that defines a set of rules for encoding documents in a format which is both human-readable and machine-readable. It is defined by the W3C's XML 1.0 Specification and by several other related specifications, all of which are free open standards." (Wikipedia, accessed 7 Nov. 2015)

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