r case, and optionally with attributes, of course).
 These should be written as empty
XML elements in the stylesheet, and will be written to the HTML output stream without a
closing tag.</p>

<p>With HTML output, if the attribute name is the same as its value, the abbreviated form
of output is used: for example if &lt;OPTION SELECTED="SELECTED"&gt; appears in the stylesheet,
it will be output as &lt;OPTION SELECTED&gt.</p>

<p>A simple stylesheet may be created by using a literal result element as 