770     _prev( 0 ), _next( 0 ),  in XMLNode()
835         _lastChild = _lastChild->_prev;  in Unlink()
838     if ( child->_prev ) {  in Unlink()
839         child->_prev->_next = child->_next;  in Unlink()
842         child->_next->_prev = child->_prev;  in Unlink()
845 	child->_prev = 0;  in Unlink()
856 	TIXMLASSERT(node->_prev == 0);  in DeleteChild()
876         addThis->_prev = _lastChild;  in InsertEndChild()
885         addThis->_prev = 0;  in InsertEndChild()
904         TIXMLASSERT( _firstChild->_prev == 0 );  in InsertFirstChild()
906         _firstChild->_prev = addThis;  in InsertFirstChild()
910         addThis->_prev = 0;  in InsertFirstChild()
916         addThis->_prev = 0;  in InsertFirstChild()
951     addThis->_prev = afterThis;  in InsertAfterChild()
953     afterThis->_next->_prev = addThis;  in InsertAfterChild()
976     for( const XMLNode* node = _lastChild; node; node = node->_prev ) {  in LastChildElement()
1000     for( const XMLNode* node = _prev; node; node = node->_prev ) {  in PreviousSiblingElement()