Alternatively, the user can, without turning the instrument and without changing the direction in which cutting is performed, change the direction of {HEAD ~ offset} of {TAIL ~ the bend region} 
of
Alternatively , the user can , without turning the instrument and without changing the direction in which cutting is performed , change the direction of { HEAD ~ offset } of { TAIL ~ the bend region }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL