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| ArcObjects Help for .NET developers > ArcObjects namespaces > Carto > ESRI.ArcGIS.Carto > Interfaces > IE > IExtentStack Interface (ArcObjects .NET 10.5 SDK) | 
Provides access to members that control the extent stack.
| Description | ||
|---|---|---|
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CanRedo | Indicates if there is an extent that can be redone. | 
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CanUndo | Indicates if there is an extent that can be undone. | 
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Count | The number of extents on the stack. | 
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Do | Zooms to the given extent and places it on the stack. | 
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Item | The extent at the specified index. | 
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Redo | Redo the next extent on the stack. | 
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Reset | Removes all extents from the stack. | 
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Undo | Undo the previous extent on the stack. |