anchor.diff:  	( XML_PI_START )
   	=> XML_PI { $setType(XML_PI); }
   	|
  +	XML_CDATA { $setType(XML_CDATA); $setText("CDATA"); }
  +	|
   	END_TAG_START
   	{
   		inElementContent= false;
  
positive.code: protected XML_COMMENT_END : "-->" ;
  protected XML_PI_START : "<?" ;
  protected XML_PI_END : "?>" ;
  
  protected LETTER
  :
  
negative.code: 	xmlComment 
  	| 
  	xmlPI
  	|
  	cdataSection
  	;
  
  computedConstructor throws XPathException
  