An external access is preferably provided to enable {HEAD ~ the collection} of {TAIL ~ this recorded data} 
of
An external access is preferably provided to enable { HEAD ~ the collection } of { TAIL ~ this recorded data }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL