{{language|XSLT |site=http://www.w3.org/TR/xslt |LCT=no }} '''XSLT''', which stands for '''Extensible Stylesheet Language Transformations''', is a domain specific [[functional programming|functional]] language for extracting data from and transforming [[XML]] documents. The language itself uses [[XML]] syntax. It is defined in three pieces:

'''Extensible Stylesheet Language''' (XSL) is the base language

'''XPath''' is the expression language used within many of the attributes to address portions of the document and manipulate values

'''Formatting Objects''' (FO) is an extension for providing page layout and presentation, which has a similar model to PDF