The Tonemapper 9and Environment) options nodes are items that you can select to get access to their respective render settings (exposure settings, environment mode and maps). Without the node the settings in those groups will take their default values.
Comments
The Tonemapper 9and Environment) options nodes are items that you can select to get access to their respective render settings (exposure settings, environment mode and maps). Without the node the settings in those groups will take their default values.