A class object is a container object that is part of a library
hierarchy.
General libraries have classes and sub classes. Similarly, document library hierarchy includes
classes called document families and sub document families, and the part library
hierarchy includes classes called part families and sub part families. Your company can
define as many class objects as required to define a hierarchy of container objects.
For example, a general library called Interface that manages code for
designing interface devices could contain a class called Peripheral that
manages code for peripheral interface devices. Within that class, you could
create two classes, Analog and Digital for these types of peripheral interface
devices. You can continue to create classes and subclasses until you have
created a hierarchy that fully describes your production process.