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A cross-platform, extensible, and text-based standard markup language for representing structured data. It provides a cross-platform, software- and hardware-independent tool for transmitting information.
NIST SP 800-95 under Extensible Markup Language (XML) from World Wide Web Consortium (W3C): Extensible Markup Language (XML)
A specification for a generic syntax to mark data with simple, human-readable tags, enabling the definition, transmission, validation, and interpretation of data between applications and between organizations.
NIST SP 800-82 Rev. 2 under Extensible Markup Language (XML)
a flexible text format designed to describe data for electronic publishing.
NISTIR 7250 under Extensible Markup Language
NISTIR 7387 under Extensible Markup Language
Extensible Markup Language, abbreviated XML, describes a class of data objects called XML documents and partially describes the behavior of computer programs which process them.
NIST SP 800-63-2 [Superseded] under Extensible Mark-up Language (XML)