I have a question about Messiah: Is it possible to load a background reference image for posing? It's something that all Modelling tools allow, I'm just wondering if you can do it in an animation tool such as Messiah for precise KeyFrame tweaking?
I see the onion-skin feature, but if I understand it correctly, it is simply to allow you to see LAST keyframe while placing the next one.
What about an external reference (JPG, TIFF, etc) what is brought in to use as a reference for positioning? Anything?