Hook anchor 464 and vertical movement retainer 468 are positioned such that sufficient clearance is provided to allow easy accessibility of a hook to hook anchor 464, and easy manual insertion and {HEAD ~ removal} of {TAIL ~ a hook} from hook anchor 464 upon appropriate manipulation of the hook 
of
Hook anchor 464 and vertical movement retainer 468 are positioned such that sufficient clearance is provided to allow easy accessibility of a hook to hook anchor 464 , and easy manual insertion and { HEAD ~ removal } of { TAIL ~ a hook } from hook anchor 464 upon appropriate manipulation of the hook
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