Thanks deke for that post. I had already managed to reverse engineer the Bezier 
positional stuff though. My fault for not making my question specific enough:

What I am still missing is a breakdown of what values can go into the .nk file 
to control the Bezier animation curve shape field. As in:

shape {{curve i C k x1 0 s0 x10 9 s0}}

Sort of thing. 

I think Wouter already clarified that 's0' gives the tangent gradient at points 
along the curve. I understand the keyframe descriptors and the capital letter 
controlling the curve family. I'm still wondering though, what other parameters 
can go into a curve shape and what they mean?

Thanks, 
Bruce



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