For {HEAD ~ the purposes} of {TAIL ~ the present invention identity} is preferably determined by means of known computer programmes using standard algorithms 
of
For { HEAD ~ the purposes } of { TAIL ~ the present invention identity } is preferably determined by means of known computer programmes using standard algorithms
OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH