[3d] global/local transformations

Hi!

I’ve studied all adobe docs, but still can’t understand all.

Is there any that can help me understand all the differences between global and local transformations, and their practical use?

Yes, I know, global refers to stage, local to the parent mc, but for example, I’ve made some little experiment. If I transform a single mc inside another mc, and try to use global and then local, well I can’t see any differences. So when and how should I really use these options?