Vertical movement retainer 468 includes surface 469 which functions to block substantial vertical movement of {HEAD ~ a hook} with {TAIL ~ respect} to hook anchor 464 
with
Vertical movement retainer 468 includes surface 469 which functions to block substantial vertical movement of { HEAD ~ a hook } with { TAIL ~ respect } to hook anchor 464
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH