On 10/4/07, David Teller <David.Teller@univ-orleans.fr> wrote:
> It seems that String is the name of the module structure itself rather
> than its signature. But what is the name of the signature ?

The relationship between the foo.ml and foo.mli file is exactly this:

module Foo: sig
  <contents of foo.mli>
end = struct
  <contents of foo.ml>
end

i.e., the .mli is not given a name.  There is a patch to support what
you want to do here [1], using a new statement "import" to include the
signature from an .mli file... it's one of a handful [2] [3] of
patches from Piotr Wieczorek that I'd love to see make it into the
official tree, but I haven't heard from the O'Caml dev team one way or
the other.

- Chris

[1] http://rainbow.mimuw.edu.pl/~pw189451/ocaml/extsig.patch
[2] http://caml.inria.fr/pub/ml-archives/caml-list/2006/12/c7461312202053f2213a9bb33206fcb8.en.html