Could someone who knows the inner workings of POV-Ray (and MegaPOV) please
tell me why transmit values outside the range of 0 to 1 work as they do?

And why does it work differently in MegaPOV than in POV-Ray 3.1?

In povray.binaries.images I have posted some graphs that show how the
transmit value seem to work in POV-Ray 3.1, in MegaPOV 0.6, and how I would
like it to work.

The reason I would like the transmit value to work different is that if it
works my way (which is more simple), it can be used for many different
special-effects such as inverting pigments and contrast-enhancing pigments.

My suggested change will most probably not brake any old scenes because it's
not very common to use transmit values outside the range of 0 to 1. Values
between 0 and 1 will work the same way as it currently does.

I have brought up this subject before, but not got the response I hoped for.
This time I *really* hope for some feedback - especially from people who
know what they're talking about! ;)

If you don't want to use my suggested change, could you at least tell me
*why* it should work as it currently does?

Rune
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