On Jul 16, 2009, at 7:48 PM, C. Titus Brown wrote:

> I agree with the decision although the math for negative frames seemed
> more complicated...

I think I had an easier time because I chose a mathematically simple  
definition of frame, as simply "position mod 3".  I think a simple and  
systematic solution like that makes sense as an internal  
representation.  But that doesn't address the question of external  
interface for users; if there are well-established standards ("only in  
your dreams, pal!") we should use them.

-- Chris

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