What is the naming rules of views?

By Blue

This as an example.

extend_view('profile/menu/links','blog/menu');

The first param is the view to extend, and the second param is the view to extend with. The question is that I don't know where to find the relevant fies for them.

I have read the documents about view system of Elgg, but I can't grasp the spirit. Any suggestion is welcome.

Regards!

Blue