In a preferred form of the invention, {TAIL ~ the system} includes {HEAD ~ a means} for adjusting the tension of the cable 
In a preferred form of the invention , { TAIL ~ the system } includes { HEAD ~ a means } for adjusting the tension of the cable
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH