A little FYI for anyone interested in modding their rigs to support these scale changes automatically, don't use valueOpDeltaAdd, use valueOpTimes (multiply the figure's scale value times the conformer's scale value).

For each body part (including Body) where scaling is being done - which is Body, Thighs and Shins for the "petite" scale, but various others for some of the other scale settings - add the following chunk of parameters:

valueOpTimes
Figure 1
BODY:2  (or whatever current bodypart)
scale
deltaAddDelta 1

edit: oh neat, there is a feature in Poser 8 (presumably the new Poser Pro as well) "Include scales when conforming" that you just have to enable for the conforming figure, it seems - that sure saves a ton of work

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