Description: A model has 4 Arcs: Front, Rear, Left Flank, and Right Flank. Each Arc is determined by extending a straight line from the corners of the model's base, in a 135 angle from the model's Facings. Any object at least touching the line that separates two Arcs (even if only in a single point) is considered to be inside those Arcs. For rules purposes, models on round bases have a single 360 Arc all around, which is considered to be their Front Arc.