OP_SMALL_ARC_TO_CW
op = OP_SMALL_ARC_TO_CW;
|| (op & OP_SMALL_ARC_TO_CW) != 0
op = OP_SMALL_ARC_TO_CW;
|| (op & OP_SMALL_ARC_TO_CW) != 0
op & (OP_SMALL_ARC_TO_CW | OP_LARGE_ARC_TO_CW),