| The XML family of languages is being created by adapting
existing international publishing standards for use on the
Web. - XML (Extensible Markup Language): A subset of
SGML (ISO 8879) designed for easy implementation
- XLL (Extensible Linking Language): A set of
standard hypertext mechanisms based on HyTime (ISO/IEC
10744) and the Text Encoding Initiative (TEI)
- XSL (Extensible Stylesheet Language): A
standard stylesheet language for structured information
formed by subsetting DSSSL (ISO/IEC 10179), designing an
alternative syntax, and incorporating key CSS concepts
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