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Trapping JSP Exceptions

I am writing a custom tag library and I am looking for information on how to 
trap the JspTagExceptions and JspExceptions in a global manner (i.e. where can 
I put a single catch(JspException) statement to catch everything on any JSP 

The Javadocs for the javax.servlet.jsp.JspException class has the following 
statement: "A generic exception known to the JSP engine; uncaught JspExceptions 
will result in an invocation of the errorpage machinery".

What I am looking for are some online resources or pointers on where to learn 
more about this vague reference to "the errorpage machinery".

Anybody got any pointers?