The ratio between the thickness of {TAIL ~ the thin elements} and {HEAD ~ thick patterns} is typically of from 1/5 to 1/10 
The ratio between the thickness of { TAIL ~ the thin elements } and { HEAD ~ thick patterns } is typically of from 1/5 to 1/10
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH