{HEAD ~ A comparator} for comparing the logic signal with {TAIL ~ pre set limit value} is associated with the logic element 
{ HEAD ~ A comparator } for comparing the logic signal with { TAIL ~ pre set limit value } is associated with the logic element
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH