View source for Standard Generalized Markup Language (SGML)

== What is a Standard Generalized Markup Language (SGML)?  ==

'''The Standard Generalized Markup Language (SGMl)''' as defined in ISO8879, is a language for defining markup languages. [[HTML (Hypertext Markup Language)|HTML]] is one such "application" of SGML.

An SGML application consists of several parts:
*The SGML declaration. The SGML declaration specifies which characters and delimiters may appear in the application.
*The document type definition (DTD). The DTD defines the syntax of markup constructs. The DTD may include additional definitions such as numeric and named character entities.
*A specification that describes the semantics to be ascribed to the markup. This specification also imposes syntax restrictions that cannot be expressed within the DTD.
*Document instances containing data (contents) and markup. Each instance contains a reference to the DTD to be used to interpret it.<ref>[https://www.w3.org/TR/WD-html40-970708/intro/sgmltut.html Definition - What is Standard Generalized Markup Language (SGML)? -W3.Org]</ref>








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