This article seeks to explain the use of particle effects in enigma.
Particles effects usually what you see in games that should be
represented by a large quantity of generic materials. Take for instance
smoke, to render smoke you want to have allot of billboards facing the
camera that have a smoke texture over them. To render this quickly you
want to batch them together, and this is where particles effects come
into use. They can basically be used to render any sort of special
graphics effects, eg. explosions, rain, etc.
Are usually 2D billboards that are always facing the camera, sometimes
producing a volumetric effect.
Emitters are what produce particles.