6. Area light

You may want to add a direct light as well, to add more depth or to highlight 
a few details. If you want to get nice, soft shadows, you can't just put in an 
ordinary light, you'll need an area light. An area light consists of several 
point lights. You can change the settings to use more or less point lights and 
expand or decrease the area, to make the shadows softer or harder.

For instance:

	light_source {
	  <-5000,-5000,-5000>
	  color rgb .4
	  area_light 200, 200, 10, 10
	  adaptive 1
	  jitter
	  circular
	  orient
	}

Check out <tutorial_chapter06a.png>.