Changing Fog and BackgroundColor...

I know you can change the global lighting, I know you can change the fog too, but I'm not sure how it works. Looking at the script for the second job change the command for fog only has 2 values. What do they mean? How do I change it to be the color and density I want?

How can change the background color of a map through pinescript?
http://puu.sh/6q7aw.jpg
The background color is like the color of the horizon.

Thanks^^

Such a unique topic you have here.

Lmfao.