 no effect when
the result is a DOM tree or SAX event stream.</p>

<p>Strings that match the <a href="http://www.w3.org/TR/xslt#output">XSLT
specification for xsl:output attributes</a> can be referenced from the
<A HREF="../../../javax/xml/transform/OutputKeys.html"><CODE>OutputKeys</CODE></A> class. Other strings can be
specified as well.
If the transformer does not recognize an output key, a
<CODE>IllegalArgumentException</CODE> is thrown, unless the
key name is <a href="#qname-delimiter">namespace qualif