This line extends across {HEAD ~ the document} 10 in {TAIL ~ a direction} which is perpendicular to direction 14 
in
This line extends across { HEAD ~ the document } 10 in { TAIL ~ a direction } which is perpendicular to direction 14
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH