This figure, a pyramid, illustrates object class inheritance. The pyramid is divided into three levels, each representing an object class. The top third of the pyramid represents the object class top. The middle third, the object class person, and the lower third, the object class organizationalPerson. On the left of the pyramid, an up arrow, marked super class, indicates that the object classes higher in the pyramid are super classes of those below them. On the right, a down arrow, marked Inheritance, indicates that the lower object classes inherit attributes of the higher ones.