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