Permissions in Revo: Resources belonging to Multiple Resource Groups?

I’ve got a resource that belongs to 2 resource groups:
* Resource Group A
* Resource Group B

Now, my user is in User Group A, which has permission to view resources in Resource Group A.

So the question is that regarding the logic used in applying multiple resource groups: if a resource belongs to more than one resource group, then an "OR" logical grouping is applied, right? In other words, my user must belong to a user group with access to EITHER Resource Group A OR Resource Group B (not both). My user’s user-group doesn’t need to have access to BOTH the resource groups (Resource Group A and Resource Group B); the user group only needs access to ONE of them, right? Thus it’s an "OR" logical grouping and not an "AND" grouping.

Is that correct? Does that make sense?

Yes and yes.

IOW, if a user has a permission granted somewhere to see a resource in a given context they’ll see it, regardless of other permission settings.