Extensible Style Language
XSL is to XML as Cascading Style Sheets (CSS) are to HTML
Like a CSS, an XSL style sheet describes the presentation of the XML document
Advanced layout features of XSL include: rotated text, multiple columns, and independent regions
Development of XSL lags behind XML - currently a Working Draft of the W3C.
Content of XML documents is intended to be easily read by both people and software, but raw XML data is not suitable for viewing by people who are not interested in structure.
To publish information held in XML format it is necessary to replace the tags with appropriate text styles.