XML History

• SGML (Standard Generalized Markup Language, ISO 8879): approved 1986

• HTML - (HyperText Markup Language): Document Type Definition conforming to SGML

• XML - (eXtensible Markup Language): restricted form (application profile) of SGML

SGML (ISO 8879.1986)

HTML 2.0-4.0(W3C 1995-98)

XML (W3C 2/1998)

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