Anyhow, for regular scenes you can do
> as me: just use the lightsys macros with the predefined spectrums, and
> play a bit with the brightness and the white point to get the feel you want.

Ah, and how do you do that? :O) I'd be happy to write a tutorial on that
alone if I understood how. I set up a page with some figure meshes hacked
into the demos and the camera moved about.
http://www.geocities.com/fls13ec/PovTest-Lightsys4.html

For example, what do the .inc files actually include? I see in
lightsys_constants.inc file certain brands of light bulbs are assigned a
certain amount of lumens. Then there is a relationship with a spline that
is defined in either espd_cie_standard.inc or espd_lightsys.inc. At least I
think. How do you insert in a scene a GE 100 watt lightbulb in a particular
location, like a lamp? Or how about sunlight streaming through a window
into a room?

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