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