> Your ramblings are pretty well spot on.  Language 
> ambiguities, OpenGL naming, OSG naming and behavior all 
> conspiring to confuse :-)

I'm not so sure. The concept of having lighting on or off is pretty
well-established in the computer graphics industry. I don't recall a lot of
OpenGL newbies being confused about this concept.

More likely, I'd say OSG users are confused because osgViewer and SceneView
"do something" with lighting, which makes them think that the ONLY way to
control lighting is through SceneView/osgViewer, rather than through the OSG
state model in their own scene graph.

If my suspicion is correct, then I'm not sure how to reduce the confusion
other than document it.
   -Paul

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