This would be not useful for the program with the current renderer.

thats pity

You can add your own lights if you want more light

that is a workaround, but not very good... you have to add many lights at a huge building to simulate a ambient light.

What did you feel was missing in the help page about photo creation?

I mean what algorithm is used. It seams to be Raytracing or eventually Photonmapping. but i cant find the Code, so i can't decide.
but with the link I found it. thanks