Re: EXR layer naming conventions

> - For consistency, "<channel>" should, if possible, be chosen from  
> the list of main channels: R/G/B/A/Z/Y/RY/BY. This works for layers  
> that represent colors. Writers should be strict about using the  
> recommended channel suffixes,
> but readers should recognize other reasonable versions, like r/g/b/a,
> red/green/blue/alpha, etc..

This is what I was hoping to avoid in my code but cannot. Obviously  
if you throw non-english languages possibly represented as UTF-8 or  
possibly transliterated to ASCII in the mix you've got a lot of  
permutations to deal with.

I think nuke's behavior is ideal with regard to layer/channel naming.

Another possibility is to define a header attribute that provides  
semantic information.

	-Jim