Extention elements

[Joseph Shraibman]

How do I implement extention elements?  The docs at
http://xml.apache.org/xalan-j/extensions.html#ext-elements are pretty 
weak.  There are examples of  functions but not extention elements.

In addition
http://xml.apache.org/xalan-j/apidocs/org/apache/xalan/lib/Redirect.html 
has a link labeled "Example with Redirect extension" but that link is 
broken.