Apparatus 4, wherein said predefined width of thin lines is a width of one pixel and {HEAD ~ each point} along {TAIL ~ said line P} comprises a distinct pixel 
along
Apparatus 4 , wherein said predefined width of thin lines is a width of one pixel and { HEAD ~ each point } along { TAIL ~ said line P } comprises a distinct pixel
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 OTH OTH OTH OTH