A new value for the DataWindow object Print.Paper.Size property and two new Print properties have been added. To specify a user-defined paper size, set the Paper.Size property to 256, then set the Print.CustomPage.Length and Print.Custom.Page.Width properties to the desired size in millimeters. For example:
 

dw_1.Object.DataWindow.Print.Paper.Size = 256
dw_1.Object.DataWindow.Print.CustomPage.Length = 254
                                       // 10 inches
dw_1.Object.DataWindow.Print.CustomPage.Width = 190.5
                                        // 7 inches