Landmarks: S = sella; N = nasion; A = A-point; B = B-point; Is = incision superior; Ms = molar superior; Ii = incision inferior; Mi = molar inferior; Me = menton; Co = condylion; Ag = antegonion.
Reference lines: NSL = nasion-sella line; NA = nasion-A-point line; NB = nasion-B-point line; OP = occlusal plane.
Measures - linear: FH = anterior facial height; ML = mandibular length.
Measures - angular: SNA = sella-nasion-A-point; SNB = sella-nasion-B-point; OP/SN = occlusal plane/SN angle.