@@ should be written \@\@ for Ocamldoc...

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@13416 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
A more CamlTk-ish version.

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@13417 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02