REF MATING PART (NUMBER OF PART)", "TO MATCH (NUMBER OF PART)", OR "LOCATE FROM (NUMBER OF PART)". WHEN USED ON THE DRAWING IN CONJUNCTION WITH A HOLE PATTERN SHALL BE INTERPRETED TO MEAN THAT ONE OR BOTH OF THE MATING PARTS MUST BE DRILLED TOGETHER ON ASSY OR INSTL OR COORDINATED TOOLING IS REQUIRED TO ASSURE MATING WITH THE HOLE PATTERN OF THE REFERENCED PART.