Attributes of facial features.

Thirty-six facial features are tabulated below, each with associated attributes, for a total of 71 attributes. Widths are mediolateral; lengths and heights are superoinferior; and protrusions and depths are anteroposterior; x, y, and z are positions in these same axes respectively. Throughout this paper, we systematically refer to these anatomical terms by the abbreviations listed here, such as “FOR_protrusion” rather than the more cumbersome “anteroposterior protrusion of the forehead”.