S = sella; A = point A; B = point B; N = nasion; Go = gonion; Me = menton; Po = pogonion; G = glabella; SN = subnasale; Ls = labralesuperius;
Li = labraleinferius; Stms = stomionsuperius; Stmi = stomioninferius; Pg’ = soft tissue pogonion; Si = labiomental sulcus; N’ = soft tissue nasion.