This property determines whether the row behaves as a node in an outline tree.
You can use Row.IsNode to create custom outline trees, or use the grid's C1.Win.C1FlexGrid.C1FlexGridBase.Subtotal(C1.Win.C1FlexGrid.AggregateEnum,System.Int32,System.Int32,System.Int32,System.Int32,System.String,C1.Win.C1FlexGrid.AggregateFlags,C1.Win.C1FlexGrid.RowColFlags) method to create outline trees automatically.