Leg members 474 and 476 function both as a frame to support hook anchor 464 and together as a horizontal movement retainer to prevent substantial horizontal movement of {HEAD ~ a hook} with {TAIL ~ respect} to hook anchor 464 
with
Leg members 474 and 476 function both as a frame to support hook anchor 464 and together as a horizontal movement retainer to prevent substantial horizontal 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 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