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