An observation made in a recent study of rhombohedral trilayer graphene suggests that stacking domain walls may also cause the appearance of FOs. The authors detected oscillations with a 1/r decay rate. In fact, the decay rate of these oscillations is consistent with the previously observed FOs from point defects and step edges, as well as a theoretical prediction for double-layer graphene. The FOs from point defects have a period of approx. 14 Å, only a little different from the previously mentioned graphene studies.