band bar cross-hatching dash delicacy delicate delicate distinction delineation diagonal differentia differential distinction dotted line fine point finespun hachure hairsplitting hatching line lineation margin narrow margin nice nice distinction nicety nuance particle of difference point of difference refined refinement score shade of difference slash streak streaking striation strip stripe striping stroke sublineation subtle subtle distinction subtlety underline underlining underscore underscoring virgule wide margin