On Tue, 2009-12-15 at 16:53 +0000, Ron Jensen wrote:

> Coordinates are in ac3d units centered about the origin of the model.  

Oh, and the coordinate system is slightly altered between ac3d and fg,
too:

AC3D  FG
 X     X  (fwd/aft)
 Y     Z  (up/down)
 Z    -Y  (side)


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