MarkupOutput Interface

The MarkupOutput interface exposes the services of a transform output object.  This object is used by a transform to record the results of a transformation.  The results can be directly sent back to the user via the JspWriter interface (which is the type of the implicit out object) or the PrintWriter interface (which is used inside a Servlet or ASP.NET file).

The transform object uses the append method to add data to the end of the markup output.  The elementAt method returns the object at the specified index.