Well under the animation section it says  -

PARTICLE GENERATOR

  The particle generator in Carrara 6 allows you to create fluid and volumetric effects. New rendering options have been added, allowing you to use splats (squares oriented towards the direction of view) or metaballs in addition to triangles and spheres. The particles interact realistically with other objects and physical forces in your scene. Objects in your scene can be used as particles, allowing you to create swarms of bees, falling leaves, flocks of seagulls, and more.

I guess I was reading more into this than there is. 

Thanks