camera.clip_far = 2000; //cliprange from camera in quants
camera.fog_start = 0.8 * 2000; // fog at 80% of clip_range
camera.fog_end = 0.9 * 2000; // fog till 90% of clip_range
fog_color.red = 1;
fog_color.green = 1;
fog_color.blue = 1;



add that to in your main wdl file, under FUNCTION MAIN()