Implements the {@link javax.xml.transform.Templates} interface, and defines a set of classes that represent an XSLT stylesheet.

{@link org.apache.xalan.templates.StylesheetRoot} implements the {@link javax.xml.transform.Templates} interface, and extends {@link org.apache.xalan.templates.StylesheetComposed}, which is a {@link org.apache.xalan.templates.Stylesheet} composed of itself and its included Stylesheet objects. A StylesheetRoot also contains a global list of all imported StylesheetComposed objects. The role of these objects is to hold immutable stylesheet data, not to perform procedural tasks associated with the construction of the data (the org.apache.xalan.processor package) or with the transformation (the org.apache.xalan.transformer package).

{@link org.apache.xalan.templates.ElemTemplateElement} is the superclass of all XSLT instruction elements, including Stylesheet. The xFunc classes extend members of the org.apache.xpath package and implement XSLT functions. Unlike the Stylesheet "container" objects, the instruction element and function classes do contain procedural execute() methods that are called during the transformation.