Excluding network interfaces from RRD graphs?

["Hubbard, Greg L" <greg.hubbard (at) eds.com>]

Shire-folk:

In Hobbit 4.2, the bandwidth for my system interfaces is now being
tracked and graphed!  Yes!  But some of my servers have a bit list of
interfaces that I do not want to track (wrsmd<nn>)...

So, is there a way to exclude network interfaces from the list, like you
can exclude disks from the disk graphs?

And, is there a way to tag each interface with something descriptive,
such as "eri0=Backup". Etc.

I didn't see any of this in the docs, or in the configuration
files...but it could still be there...

GLH