I've seen it explained as whether or not to loop animation (no) as well as 'linear spline' (no), but as far as I know it never changes - if it exists, it is 'sl 1'.  There do not appear to be any settings that will change it.  Personally, I think that this is some archaic, now-unused keyword (there are none of those in Poser files - LOL).  Or it is something internal but irrelevant to any settings (like 'jointMult' and 'calcWeights').

I saved a quick animated scene and replaced all of he 'sl 1' with 'sl 0'.  Didn't see any changes.

Robert

C makes it easy to shoot yourself in the foot. C++ makes it harder, but when you do, you blow your whole leg off.

 -- Bjarne Stroustrup

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