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The Standard Generalized Markup Language (SGML ) is an ISO specification for defining declarative markup languages.

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SGML

On the web, HTML 4, XHTML , and XML are popular SGML-based languages. It is worth noting that since its fifth edition, HTML is no longer SGML-based and has its own parsing rules.

See also

Updated on April 20, 2024 by Datarist.