Extensible Style Sheet Language (XSL) includes Extensible Style Sheet Language Transformations (XSLT) and Extensible Style Sheet Language Formatting Objects (XSF:FO). XSLT is a gramar for describing the way one XML document ought to be transformed into another XML, HTML or text document. XSL:FO is a strictly presentation mark up language. XSL:FO documents are easily processed into other formats like PDF or RTF.
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