| Overload | Description | 
|---|---|
| DoUndo(Boolean) | Make Undo action - reverse all operations up to last CloseOpenUndo call or initalization of UndoStep object. | 
| DoUndo() | Make Undo action - reverse all operations up to last CloseOpenUndo call or initalization of UndoStep object. Redo action is possible after call this method. | 
