From Wakapon
Cirrus, as well as being high altitude clouds is also my high-level Nuaj wrapper also available at the same SVN repository as Nuaj here.
It's loaded with cool stuff like a FBX scene importer that allows you to load any FBX scene from your favorite 3D package like 3DS Max and Maya into a Cirrus scene that can later be saved as a unit using the (quite lousy) Cirrus proprietary format.