>true</code> and an unsupported media type is encountered. </dd>
 </dl> 
 <p> In addition to raising the defined errors and warnings, implementations 
 are expected to raise implementation specific errors and warnings for any 
 other error and warning cases such as IO errors (file not found, 
 permission denied,...), XML well-formedness errors, and so on. 
 <p>See also the <a href='http://www.w3.org/TR/2004/REC-DOM-Level-3-LS-20040407'>Document Object Model (DOM) Level 3 Load
and Save Specification</a>.
<P>