3.1.2.2 "COBOL Language Reference" IBM Library Server

X 3.1.2.2 Inheritance

X Every method available on instances of a class is also available on
X instances of any subclass directly or indirectly derived from it. A
X subclass can introduce new methods that do not exist in the parent (or
X ancestor) class or can override a method from the parent class. When a
X subclass overrides an existing method from the parent class, it defines a
X new implementation for that method, which replaces the inherited
X implementation.

X The instance data of class-name-1 is a copy of the instance data from
X class-name-2 together with the data declared in the Working-Storage
X Section of class-name-1. Note however, instance data is always private to
X the class that introduces it.

X The semantics of inheritance are defined by the IBM SOM. All classes must
X be derived directly or indirectly from the SOMObject class. All
X metaclasses must be derived directly or indirectly from SOMClass.

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X 3.1.2.2 Inheritance

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