fined in [<a href='http://www.ietf.org/rfc/rfc3023.txt'>IETF RFC 3023</a>] must always 
 be accepted. </dd>
 <dt><code>false</code></dt>
 <dd>[<em>required</em>] (<em>default</em>) Accept any media type. </dd>
 </dl></dd>
 <dt><code>"validate"</code></dt>
 <dd> See the definition of 
 <code>DOMConfiguration</code> for a description of this parameter. 
 Unlike in [<a href='http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407'>DOM Level 3 Core</a>]
 , the processing of the internal subset is always accompl