A second operative position is defined when {HEAD ~ the first or second channel} is disconnected from the panel such that the safety device taughtly extends between the first and second channels in order to support {TAIL ~ the second channel} 
A second operative position is defined when { HEAD ~ the first or second channel } is disconnected from the panel such that the safety device taughtly extends between the first and second channels in order to support { TAIL ~ the second channel }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL