Having dug around, I did figure out what a sellion is.

First of all, the word selliform is in the OED, and that's the clue. Selliform means saddle-like. Apparently, a sellion is a word used in anthropometrics to mean the dip at the top of the nose and more or less centered between the eyes or eyebrows.

(It's amazing what you can learn with a Google search!)

Another more or less unrelated thing. (I should mention that I am not a beta tester and I am not in any way affiliated with CL). I've seen some people mention the geometry of the new P5 figures. I'd just like to point out that one of the lsited features of P5 completely nullifies that point for anything done with the Firefly renderer -- polygon smoothing.

I use a similar feature in pretty much all of my Lightwave work, except that (from what I understand) P5 does it even better. Basically, the object is converted to Subdivision Surfaces.

Sub-D's (as lots of people call them) are a method of taking a low-polygon mesh and getting a very smooth model out of it. If you've ever worked with a program which will do a smooth subdivision of the polygons in your model, it works like that except that you determine how subdivided the model gets. In the case of the Firefly renderer, it can subdivide the model down until the polygons are less than a single pixel, meaning there are effectively no more polygons in your image.

This is looking like a really excellent release. Bravo, CL!

-Zak Jarvis
http://www.voidmonster.com