IBM Generalized Markup Language: Difference between revisions

Revision as of 10:38, 20 March 2019

Revision as of 06:18, 30 October 2019

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'''Generalized Markup Language''' ('''GML''') is a set of [[Macro (computer science)|macros]] that implement intent-based (procedural) markup [[Tag (metadata)|tag]]s for the [[IBM]] [[text formatter]], [[SCRIPT_(markup)|SCRIPT]]. SCRIPT/VS is the main component of IBM's Document Composition Facility (DCF). A ''starter set'' of tags in GML is provided with the DCF product.

==Characteristics==

GML was developed in 1969 and the early 1970s by [[Charles Goldfarb]], [[Edward Mosher]] and [[Raymond Lorie]] (whose surname initials were used by Goldfarb to make up the term GML).<ref name="TheRootsOfSgml">{{cite web|url=http://www.sgmlsource.com/history/roots.htm|year=1996|title=The Roots of SGML - A Personal Recollection|author=Charles F. Goldfarb|accessdate=2007-07-07}}</ref>

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The [[Standard Generalized Markup Language]] (SGML), an [[International Organization for Standardization|ISO]]-standard technology for defining generalized [[markup language]]s for documents, is descended from GML.<ref name="TheRootsOfSgml"/> The [[XML|Extensible Markup Language]] (XML) was initially a streamlined and simplified development of SGML, but has outgrown its parent in terms of worldwide acceptance and support.

== A GML script example ==

:h1.Chapter 1: Introduction

:p.GML supported hierarchical containers, such as

:ol.

:li.Ordered lists (like this one),

:li.Unordered lists, and

:li.Definition lists

:eol.

as well as simple structures.

:p.Markup minimization (later generalized and formalized in SGML),

allowed the end-tags to be omitted for the "h1" and "p" elements.

==Related programs==