GML

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GML, aka IBM Generalised Markup Language, is a xml format created in 1969 by Charles Goldfarb and Edward Mosher and Raymond Lorie.

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55Years Old

Generalized Markup Language (GML) is a set of macros that implement intent-based (procedural) markup tags for the IBM text formatter, 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.. Read more on Wikipedia...

GML Wikipedia page
GML first developed in IBM
GML on HOPL
ANTLR grammar for GML
See also: (4 related languages)SCRIPT markup, SGML, XML, Information Presentation Facility

Example from hello-world:

draw_text(1, 1, "Hello World");

Feature	Supported	Token	Example
Strings	✓	"	"Hello world"
Print() Debugging	✓	draw_text

GML - Xml format

Language features