EntityQ207819· pop 43· linked from 639 articles

Standard Generalized Markup Language

markup language

Key facts

Filename extension: .sgml , .sgm
Internet media type: Text/SGML , Application/SGML
Uniform type identifier uti: public.xml
Developed by: ISO
Type of format: Markup language
Extended from: GML
Extended to: HTML , XML
Standard: ISO 8879

via Wikipedia infobox

Article

The Standard Generalized Markup Language (SGML; ISO 8879:1986) is a standard for defining generalized markup languages for documents. ISO 8879 Annex A.1 states that generalized markup is "based on two postulates":

Declarative: Markup should describe a document's structure and other attributes rather than specify the processing that needs to be performed, because it is less likely to conflict with future developments.