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Represent protected data of the workbook.
public enum WorkbookLocks : byte
  Public Enum WorkbookLocks As Byte
  | Name | Description | 
|---|---|
| All | Protect all data.  | 
      
| None | Protect nothing.  | 
      
| Structure | Protect the structure of the workbook (the relative position of the sheets).  | 
      
| Windows | Protect the workbook windows.  |