{HEAD ~ The holding members} are separated or isolated from {TAIL ~ the slider}, to assure smooth sliding movement of the slider 
are separated from
{ HEAD ~ The holding members } are separated or isolated from { TAIL ~ the slider } , to assure smooth sliding movement of the slider
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH