Summary: the top level object class.

The Object class is the root class. All classes used in breve have Object as an ancestor. The object class implements some basic services that all classes will have access to.

Subclassing Object directly is rare. The classes Real and Abstract are logical separations of the Object class containing "real" objects (which correspond to a physical entity in the simulated world) and "abstract" objects which are generally used for computation or control of the real objects. You should consider subclassing one of these classes instead.