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EngineRing -- the class of rings handled by the engine
The engine handles most of the types of rings in the
system.
The command new Engine from x is not meant for general
users, and provides the developers with a way to create top-level
rings corresponding to rings implemented in the engine. Here x
may be:
The type EngineRing is a member of the class Type.
Each object of class EngineRing is called an engine ring.
Each engine ring is also a member of class Ring.
Types of EngineRing :
Methods for using an engine ring :
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