In heraldry, the chief or chief point is the head or principal part of the escutcheon. It contains the upper third of the field, and is determined by one line, either drawn straight or crenelle, or indented. The chief is in turn divided into three areas. The right side being the dexter chief, the middle the middle chief and the left side the sinister chief. Sometimes one chief is borne upon another, which is called surmounting, and is usually expressed by a line drawn across the uppermost part of the chief. When a chief is charged with anything it is said to be on chief, but when a thing is borne on the top of the escutcheon it is said to be borne in chief.