code: function OpenXML_Rels_CommitNewRids ($Debug) {
  
  		foreach ($this->OpenXmlRid as $doc => $o) {
  
  			if (count($o->RidNew)>0) {
  
  				// search position for insertion
  				$p = strpos($o->FicTxt, '</Relationships>');
  				if ($p===false) return $this->RaiseError("(OpenXML) closing tag </Relationships> not found in subfile ".$o->FicPath);
  
  				// build the string to insert
  				$x = '';
  				foreach ($o->RidNew as $target=>$rid) {
  					$x .= '<Relationship Id="'.$rid.'" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/image" Target="'.$target.'"/>';
  				}
  
  				// insert
  				$o->FicTxt = substr_replace($o->FicTxt, $x, $p, 0);
  
  				// save
  				if ($o->FicType==1) {
  					$this->FileAdd($o->FicPath, $o->FicTxt);
  				} else {
  					$this->FileReplace($o->FicIdx, $o->FicTxt);
  				}
  
  				// debug mode
  				if ($Debug) $this->DebugLst[$o->FicPath] = $o->FicTxt;
  				
  				$this->OpenXmlRid[$doc]->RidNew = array(); // Erase the Rid done because there can be another commit
  
  			}
  		}
  
  	}
docs: Save the changes in the rels files (works only for images for now)