Such methods may be called by clients and overridable methods with core functionality.

Earlier I looked at the functional set-up of the store, commands, tasks and overridable functions, and how they are called and fit together.

You may wrap both user-defined functions and overridable CORE operators (except exec, system which cannot be expressed via prototypes) in this way.

W. D. Ross refers to these moderate objectivists' accounts of moral principles as "prima facie principles" which are valid rules of action that one should generally adhere to but, in cases of moral conflict, may be overridable by another moral principle, hence the moderation.

Floridi goes onto claim that this "ontological equality principle means that any form of reality (any instance of information/being), simply for the fact of being what it is, enjoys a minimal, initial, overridable, equal right to exist and develop in a way which is appropriate to its nature."

In VB.NET, a base class must provide the Overridable modifier for any virtual method, and derived classes may provide the optional Overrides modifier for any overriden method inherited from a base class (this prevents a warning from being issued).