In FIG 8A, a second alignment camera 420 of a second alignment system 400 may form {HEAD ~ a pair} with {TAIL ~ the first align camera} 220 for aligning a predetermined portion of the first and second substrates 510 and 520 
with
In FIG 8A , a second alignment camera 420 of a second alignment system 400 may form { HEAD ~ a pair } with { TAIL ~ the first align camera } 220 for aligning a predetermined portion of the first and second substrates 510 and 520
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH