That ruling addresses the shots 1, 3, 6, and 8 in the graphic that Ken posted. It doesn't say anything about the difference between touching and breaking, but rather that if a scoring area iscovered with a NS such that the perfs align , the area under the NS is not available. That is why 1 and 8 do not get any positive score and why 3 and 6 scored C's rather than A's (in addition to the obvious NS that each shot also got).