119. Distinct perpendicular lines give height effect, but they also narrow the apparent width of a wall space. It is best to have such line effects indistinct unless they appear as in the illustration on page [63], where they are intended to reduce the breadth effect of the pattern and neutralize a squat tendency.
Indistinct perpendiculars give height effect, and do not reduce the wall width.
(See [¶ 111].)
Perpendicular lines, giving height effect.
Perpendicular lines, giving height effect.