Chapter 8 Data Unit Type *. The naming rules of a structure and an element can be found below. After a structure DUT is created, an editing window will be presented with examples and definitions for reference. Users can edit the examples to make them as their own structures. Users can also find it under the DUT option in the project management area. Double click the new DUT to open it and start to edit the contents of the newly added DUT. 8-3