XSL is a language for expressing stylesheets. It consists of three parts:

1. XSL Transformations (XSLT): a language for transforming XML documents,
2. the XML Path Language (XPath), an expression language used by XSLT to access or refer to parts of an XML document. (XPath is also used by the XML Linking specification).
3. The third part is XSL Formatting Objects: an XML vocabulary for specifying formatting semantics.

An XSL stylesheet specifies the presentation of a class of XML documents by describing how an instance of the class is transformed into an XML document that uses the formatting vocabulary.

Tutorial pour mieux comprendre XSLT. Apprentissage pas à pas.

• Part I: Understanding XML and the Java XML APIs
• Part II: Serial Access with the Simple API for XML (SAX)
• Part III: XML and the Document Object Model (DOM)
• Part IV: Using XSLT

In this section of the tutorial, you'll learn how to use XSLT to write out a DOM as an XML file. You'll also see how to generate a DOM from an arbitrary data file in order to convert it to XML. Finally, you'll use XSLT to convert XML data into a different form, unlocking the mysteries of the XPath addressing mechanism along the way.

• XSL Introduction : An introduction to XSL - The style sheet language of XML. What XSL is and what it can do.
• XSL Transformation : How XSL can be used to transform XML documents into HTML documents, by inserting a reference to an XSL stylesheet into the XML document.
• XSL on the Client : How the XML parser can be used to transform an XML document to an HTML document on the client.
• XSL on the Server : How the XML parser can be used to transform an XML document to an HTML document on the server.
• XSL Sorting : How to let the XML parser sort your XML document before it is transformed to HTML.
• XSL Filtering : How to let the XML parser filter your XML document before it is transformed to HTML.
• XSL Conditional IF : How to let the XML parser conditionally transform XML documents to HTML.
• XSL Conditional Choose : How to let the XML parser conditionally choose the XML transformation.

• XSLT list Basics
• Special Characters
• XSLT Terminology
• Printing
• Where to Start
• XSLT Questions and Answers.
• FO Questions
• External Issues
• Extension Issues
• XPATH 2.0

• 800 / 850 Learning XML: Parsing XML Documents
• 660 Learning XML: XSLT Sorting
• 650 Learning XML: Making Choices
• 640 Learning XML: Trees, Nodes, and Templates, Part III
• 630 Learning XML: Trees, Nodes, and Templates, Part II
• 620 Learning XML: Trees, Nodes, and Templates, Part I
• 610 Using Conditional Tests
• 600 Using XML Attribute Values
• 590 Inserting Attributes Into the Output Stream
• 580 From XML Data to HTML Tables
• 570 Introduction to Transformations (XSLT) using IE5 (Part 2)
• 560 Part I: Introduction to Transformations (XSLT) using IE5
• 550 XSL and XSL Transformations (XSLT), Getting Started
• 150 /200 XML for Beginners

These pages are all about XSLT, an XML-based language for translating one set of XML into another set of XML, or into HTML. Of course, there are all sorts of other pages around that cover XSLT. Jeni's XSLT Pages, though, are dedicated to helping people understand and make the most of using XSLT.
xMy warmest thanks to all those people who post interesting problems on XSL-List, and especially to those of you that have encouraged me to set up this site through your kind emails.