{HEAD ~ The border} can also use {TAIL ~ additional features} to enhance the determination of rotation and skew 
use
{ HEAD ~ The border } can also use { TAIL ~ additional features } to enhance the determination of rotation and skew
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH