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INCITS/ISO/IEC 15445:2000 (S2020)
Information technology -- Document description and processing languages -- HyperText Markup Language (HTML)
This standard is a conforming application of ISO 8879, SGML. This Standard describes the way in which the HTML language specified by the certain clauses (see standard) in the W3C Recommendation for HTML 4.01 shall be used, and does so by identifying all the differences between the HTML language specified by the W3C Recommendation for HTML 4.01 and the HTML language defined by this Standard.
InterNational Committee for Information Technology Standards [incits]