Each spring lever is selectably biased against {HEAD ~ a back side} of {TAIL ~ the strike plate} in a first or second detent 
of
Each spring lever is selectably biased against { HEAD ~ a back side } of { TAIL ~ the strike plate } in a first or second detent
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH