Enter the narrow-gaps menu.
Create a gap object.
Delete an exiting gap object.
Delete all of the exiting gap objects.
Edit an exiting gap object.
Enable/Disable gap model.
List name of the gap cells zones that can be used as exclided cell zones in gaps creation.
List name of the gap face zones that can be used for gaps creation.
List gap regions.
Update gap regions for postprocessing.