CLight

is the base class for the majority of Source's lighting entities.

Classnames:
 * - The standard light entity. It emits light in all directions. Unless it's given a targetname, it will remove itself upon spawning because the game no longer needs it for anything. Named lights are toggleable but do a simpler light calculation and pieces are limited to up to 2 toggled lights shining on them at once.
 * - An entity like which simulates sunlight.