loaded mesh information

Any Idea when I load a mesh into the scene, say in the init() method I actually creates the mesh object then in the display() methed,
I actually draw the object there. where is the inforation of this object store?
Take for instance, I load a teapot object, den I would like to select certain parts of it. How am I able to do so?
How to retrieve the information of the object?

Thanks for the help… :slight_smile: