Om 'n spesiefieke venster in' n toepassing te kies, moet beide venster klas en vensterrol gekies word. Venster klas sal die toepassing bepaal, envenster rol die spesifieke venster in die toepassing; baie toepassingsverskaf egter nie bruikbare venster rolle nie.
For selecting a specific window in an application, both window class and window role should be selected. Window class will determine the application, and window role the specific window in the application; many applications do not provide useful window roles though.