Indirect Light
Indirect light in a map, is any light source that is baked into the light maps.
Note: Reflections could be considered Indirect Lights, But I will explain that under the Rim Lighting section in the main menu underLighting.
1. Ambient brighness/color and Diffuse Fraction/color
Ambient light
diffusefraction
sunDiffuseColor
contrastGain
2. Radiosity
radiosityScale
sunRadiosityScale
−MaxBounces
3. Point and Spot Lights
Creating and Placing Lights
Range, Color, and Falloff
Using Def Files