Each line card includes {TAIL ~ a processor} including {HEAD ~ a memory} storing an array of configuration tables 
Each line card includes { TAIL ~ a processor } including { HEAD ~ a memory } storing an array of configuration tables
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH