how many entities are on a layer?

Hi all,

I received a huge assembly with ~50 layers.  I am trying to get comfortable with this layout and wish to know how many entities are on each layer.  I would think this should be a column in the Layers Manager, but it is not.  I cannot seem to learn how to get that info.  Is it available somehow?

If not, is there a way to tell if a layer has ANY entities?

Thanks,

-Nate