In {HEAD ~ this mid plane} addressing or triggering configuration, the sustain function is performed by {TAIL ~ the two sustain electrodes} as in the co planar configuration, and the address or trigger function is performed between at least one of the sustain electrodes and the address electrode 
In { HEAD ~ this mid plane } addressing or triggering configuration , the sustain function is performed by { TAIL ~ the two sustain electrodes } as in the co planar configuration , and the address or trigger function is performed between at least one of the sustain electrodes and the address electrode
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH