three little questions

[apple dragon <appledragon gmail com>]

maybe these questions are too simple,but it really made me confused.

the first is what's the difference between nautilus view and nautilus
view frame,
                what's the relationship between nautilus view and
nautilus view frame.

the second is how does the compoents/tree get worked ? by
libnautilus/nautilus-view-component.idl ?

the third is what is libnautilus-adapter,I cant get a concreate image
in my head.
what is the usage of libnautilus-adapter.

I am sorry to disturb you. thanks a lot.