Permissions Questions....

I have a question about the permissions setting for the forums, and am hoping someone can clear my head here...

Each of the forums one creates allows for permission to delete and edit posts to be assigned to various user groups; these can also be assigned per group, overriding the general settings.

My question is this:  If my general settings for Forum X say that 'Registered Users' have permission to delete...does that mean they have permission to delete just their own posts, or does that mean that they have permission to delete any post on that forum?

I can't think of a simpler way to ask this; I hope that my question is clear.

Thanks, and as always thanks to bOrg for such a great app!