Additionally, {HEAD ~ a storage region} within {TAIL ~ a trap device} may be used in combination with any of the embodiments of the present invention 
Additionally , { HEAD ~ a storage region } within { TAIL ~ a trap device } may be used in combination with any of the embodiments of the present invention
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH