ublic void report_error(String message, Object info)</tt>
</dt><dd>This method should be called whenever an error message is to be issued.  In
    the default implementation of this method, the first parameter provides 
    the text of a message which is printed on <tt>System.err</tt> 
    and the second parameter is simply ignored.  It is very typical to
    override this method in order to provide a more sophisticated error
    reporting mechanism.
</dd><dt><tt>public void report_fatal_error(String messag