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Gets or sets the undo manager for this Spread component.
[Browsable(false)]
public UndoManager UndoManager { get; set; }
<Browsable(False)>
Public Property UndoManager As UndoManager
This property wraps GetRootWorkbook().UndoManager. You can set this property to null to recreate the UndoManager and clear the undo or redo state.