anchor.diff:  *  There is one `com.jme3.effect.ParticleEmitter` class for all Particle Systems.
   *  There is one `com.jme3.post.FilterPostProcessor` class and several `com.jme3.post.filters.` (all Filters have `Filter` in their names).
   *  There are several `SceneProcessor` classes in various packages, including e.g. `com.jme3.shadow.` and `com.jme3.water.` (SceneProcessor have `Processor` or `Renderer` in their names).
  +
  +
   
   
   === Particle Emitter
  
positive.code: ----
  
  
  === Post-Processor Filter
  
  [source,java]
  
negative.code: 
  === Depth of Field Blur
  
  [.right]
  image:jme3/advanced/dof-blur.png[dof-blur.png,width="150",height="100"] +
  image:jme3/advanced/light-scattering-filter.png[light-scattering-filter.png,width="150",height="100",align="right"]
  