Standard Generalized Markup Language(language, wiki, imported, Proteus)
The
Standard Generalized Markup Language (
SGML) is a metalanguage in which one can define
markup languages for documents. SGML is a descendant of
IBM's "Generalized Markup Language" GML, developed in the
1960s by Charles Goldfarb, Edward Mosher and Raymond Lorie (whose surname initials also happen to be GML).
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.
SGML was originally designed to enable the sharing of machine-readable documents in large projects in government and the aerospace industry. It has also been used extensively in the printing and publishing industries.
SGML syntax example:
typically something like this
SGML is an
ISO standard: "ISO 8879:1986 Information processing -- Text and office systems -- Standard Generalized Markup Language (SGML)"
SGML is very flexible and powerful, but its complexity has prevented its widespread application for small-scale general-purpose use.
HTML and
XML are both derived from SGML. While HTML is an application of SGML, XML is a profile--a specific subset of SGML, designed to be simpler to parse and process than full SGML.
XML is an attempt to simplify SGML for general-purpose applications, such as the
Semantic Web.
XML has been used for a large number of applications, including notably
XHTML,
RSS,
XML-RPC and
SOAP.
See also:
AAP DTD,
Document Type Definition
External Links
Some content adapted from the Wikinfo article "Standard Generalized Markup Language" under the GNU Free Documentation License.
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Standard Generalized Markup Language
Standard Generalized Markup Language
Standard Generalized Markup Language
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(last updated by Proteus, 8:41pm CDT - Tue, Apr 03 2007)
