What exactly does Blender.Scene.update() do?

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Hi python gurus,

I have a rather naive question: what exactly does Blender.Scene.update() do, more specifically, what’s the difference between update(0) and update(1) as far as the IPOs are concerned. The documentation says the following:

<b>Parameters:</b><b>full</b> -          A bool to control the level of updating:         

  •          0: sort the base list of objects.

  •          1: sort and also regroup, do ipos, keys, script links,              etc.

(type=int) Warning: When in doubt, try with full = 0 first, since it is faster. The “full” update is a recent addition to this method.

Does this mean that when you call update(0), the IPOs are not updated? What if I have the following line before the call to update(0)?

Blender.Set(‘curframe’, CurrentFrame)

I’ve tried with both update(0) and update(1), update(0) seems faster as suggested by the documentation, but I didn’t actually see any other differences. Could someone please clarify this?

Thanks a lot!

-D