Hmmm.... that's a good question/point. I don't recall doing anything with that (or even seeing it) so I would suggest that you leave it at whatever the default is as it was probably implemented for a specific situation that likely doesn't apply to most people's situations. I'm not sure what the default is... but "2" would make the most sense to me.

You know, I think it is for currencies that use more than 2 decimal places. If it does have to do with rounding then I think you have it backwards... 0 or 1 would force it to round unnecessarily whereas 2 would be correct and more would be that much more accurate (but likely unnecessary).

- Steven