[KINECT] Orientation X XYZ Orientation Y XYZ Orientation Z XYZ

If anybody knows what they mean please talk. I can’t understand.
I’m talking of the Skeleton Kinect OpenNI and its outputs.
Why the orientations separated? How do I rejoin them?
In the forum this question appeared many times, but nobody has never answered. Is it something secret or something so stupid that doesn’t deserve an answer?

Thanks

my guess would be, that it defines the axis of a coordinate system. try to put them into the node ParallelEpiped (Transform Vector) and see what comes out.

Thank you tonfilm!
I see the light now!