Drawing Annotations and Layers

Hello Everyone. I am using ProE WF5 and I have some basic question regarding drawing annotations.

What is the difference between creating a note in the 3D or in the drawing?

I notice that if I create a note in the 3D, the note will appear in the drawing but contrary if I create it in the Drawing this will not appear in the 3D.

Also I notice that the notes created in the 3D can be found in a specific Layer,

but if the notes are created directly in the Drawing this will not appear in any layer.

So what happen to that notes? I mean Why the notes created in the Drawings are not designated to a Layer?

It is possible to create a Rule in a Layer for all the new notes (created in the drawing) go to that specific layer?

Thanks for you help and regards!