Information AboutSgml |
| CATEGORIES ABOUT STANDARD GENERALIZED MARKUP LANGUAGE | |
| iso standards | |
| markup languages | |
| technical communication | |
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SGML provides a variety of markup syntaxes that can be used for many applications. By changing the SGML Declaration one does not even need to use "angle brackets" although they are the norm, the so-called ''concrete reference syntax''. SGML was originally designed to enable the sharing of Machine-readable documents in large projects in government, legal and the aerospace industry, which have to remain readable for several decades—a very long time in Information Technology . It has also been used extensively in the printing and publishing industries, but its complexity has prevented its widespread application for small-scale general-purpose use. SGML syntax example:
SGML is an ISO standard: "ISO 8879:1986 Information processing—Text and office systems—Standard Generalized Markup Language (SGML)". XML is derived from SGML and now dwarfs SGML in terms of breadth of application. XML is a profile—a specific subset of SGML, designed to be simpler to parse and process than full SGML, and to have more lightweight Internationalization . XML is a simplification of SGML for general-purpose applications, such as the Semantic Web . XML has been used for a large number of applications, including notably XHTML , RSS , Atom , XML-RPC and SOAP . Another markup language originally created as an application of SGML is DocBook , designed for authoring technical documentation. DocBook is now also available as an XML application. HTML was originally designed based on SGML tagging but without SGML's emphasis on rigorous markup. It was later reformulated (at version 2.0) to be an application of SGML, although there's some debate on whether it ever actually became one. There are also a number of languages that are related in part to SGML and XML, but, because they cannot be parsed or validated or otherwise processed using standard SGML and XML tools, cannot be considered to be applications of SGML or XML. One example is the Z Format , a language designed for typesetting and documentation. SEE ALSO EXTERNAL LINKS
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