Return Value
An author bounding box, in device-independent pixels (1/96th inch), of annotation.
The author bounding box is used when annotation is transforming, also it is used when annotation is selected.
In most cases the author bounding box matches the bounding box of annotation. The author can override this method and change the author bounding box if necessary, for example, bounding box can be inflated.
Target Platforms: .NET 10; .NET 9; .NET 8; .NET 7; .NET 6; .NET Framework 4.8, 4.7, 4.6, 4.5, 4.0, 3.5