OsSetRegionSunSettings

Function Syntax: osSetRegionSunSettings(bool useEstateSun, bool sunFixed, double sunHour);
Returns: NULL

Example: 

default

{

    state_entry( )

    {

            osSetRegionSunSettings( FALSE, TRUE, 12.0 );

                //Sets the region/ terrain-tab to non-estate, fixed-sun and at dusk settings.

    }

}