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[These are called IES Profiles](https://support.solidangle.com/download/attachments/9110010/ies-lights.jpg?version=1&modificationDate=1373453636000&api=v2) and that rendering looks like it may use #2. They are used to provide (semi) realistic baseline profiles of light intensity and distribution characteristics. Look carefully at how they interact with the environment. Fun stuff!
Edit: the spotlights aren’t pointing at the light they are throwing on the walls.