heir</U>: exemplifications, specializations, causes, effects,
roles, interrelations and interactions, laws, activities, structures, transformations,
histories, futures, evolutions and retrogressions, fine structure, etc?

<P>Hierarchy can be defined in many different ways. <U>The dictionary distinguishes</U>:
(1) The arrangement of objects, elements, or values in a graduated series;
(2) A series of objects, elements, or values so arranged; (3) <U>In logic,</U>
a series the members of which are grouped in ac