XML output via 'print':      <test><C2><97></test>
  XML output via XML::Writer:  <test><97></test>
##</code><code>##

                                # Set the output.
    if ($params{'OUTPUT'}) {binmode ($params{'OUTPUT'}, ":encoding(utf-8)"); }
    &{$self->{'SETOUTPUT'}}($params{'OUTPUT'});