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An interface declaration containing the keyword abstract in its header, declares an abstract interface. The following special
rules apply to abstract interfaces:
• Abstract interfaces may only inherit from other abstract interfaces.
• Value types may support any number of abstract interfaces.
See
Section 6.2, “Semantics of Abstract Interfaces,? on page 6-1 for CORBA
implementation semantics associated with abstract interfaces.
For a complete summary of allowable inheritance and supporting relationships among
interfaces and valuetypes see Table 3-10 on page 3-32.