Indicates that the properties of this light will be used to define the specified numbered sun. The sun will then use this light's values for (if present): _color, _diffade, _diffuse, light, and style. If this light is triggered, the sunlight will be set to the same trigger. The sun's direction is set by aiming this light using any of the spotlight aiming methods.

Note: the light entity itself will still cast light.

If this light entity defines a _sun, that sun will use this light's RGB color. A value of 0 0 0 is special: it makes the sun use the sky textures' colors instead.

Used only if this light entity defines a _sun. It sets the brightness of the diffused sunlight. This simulates the diffusion of light by atmospheric haze, creating a soft glow around the edges of sunlight shadows.

Used only if this light entity defines a _sun. It scales how quickly the _diffuse sunlight fades out over distance. The default distance is about 64 units. Values less than 1 fade slower, increasing the distance. Values greater than 1 fade faster, decreasing the distance. For example: a value of .5 fades half as fast, covering twice the distance, or about 128 units.

Note: The quality of diffuse sunlight is dependant on patch size. Values greater than 1 may require a smaller -chopsky size to look good.

If this light entity defines a _sun, that sun will use this light's brightness value. Sunlight is not affected by distance, only by the angle-of-incidence (angle it strikes surfaces).

If this light entity defines a _sun, that sun will use this light's style.

Note: Remember only style 0 light bounces.