[EricH]

Chris (and others who are asking/explaining), a picture is worth a thousand words. The attached picture is representative of one side of a typical robot. The red line is the frame perimeter's vertical projection. Under <R16>, anything to the right of it (bumper side) is a rules violation, except the bumpers.

What two items do you see extending out to the right of the line? Yep, two bolts.

Before Update #6, the upper bolt defined the perimeter, saving the lower bolt from going beyond the perimeter. After Update #6 (and before Update #7), the upper bolt no longer defines said perimeter.