Any trace event not related to an API/Logic, Emulation Screen or Host Buffer will be displayed in a white area.
Some miscellaneous events related to API or Emulation Screens will display when the filters for these types are active, otherwise, the Internal checkbox must be checked to see the Internal events.
Above you can see the top of a trace which has both internal and COM/HLLAPI filters active. Note how the information detailing the versions of the Inventu Viewer+ Service (EXELoad) and the COM Object (DLLInit) is provided.