Holes in the body and button member align when {HEAD ~ the button member} is depressed relative to {TAIL ~ the body} of insertion of the cord, with the cord being locked in position relative to the device when the button member is released 
Holes in the body and button member align when { HEAD ~ the button member } is depressed relative to { TAIL ~ the body } of insertion of the cord , with the cord being locked in position relative to the device when the button member is released
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH