Miter trapping is the art of detecting the various corner conditions and adjusting the shape of
the trap brush to produce better corner results. The picture above shows miter trapping turned on
to demonstrate how the brush shape tapers down at the corners to produce the best shape. In the picture
below miter trapping is turned off which results in some overlapping of the traps in the corners. Miter
trapping adds some overhead to the trapping process so it is generally enabled only when the trap size
is fairly large.