GDDM V3R2 Diagnosis
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Function

GDDM V3R2 Diagnosis
SC33-0870-01
The application anchor block (AAB), contains information which is passed between the application and GDDM when the application is using the reentrant application call interface.
Specifically, it contains an anchor used by GDDM for all its cross-invocation storage; feedback areas for returning error codes back to the application; and an optional application-dependent extension.

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