I have a large ocaml program and I need to make major changes.

After using C# with ReSharper in Visual Studio I am bit spoiled :-)
Having a reliable "Find Usage" feature in the browser is really useful 
when you start tearing apart a program. It is really nice to be able to 
go to the definition of a function directly, and find all locations it 
is used.

However, when I go back to Ocamlm, Emacs and Otags and -dtypes doesn't 
give a lot of help except the types.

For example Emacs "Find-tag" on Std.left, which find the following 
functions:

left, margin_left,......

Do anyone know about better ways of doing this?

-- Mattias