diff --git a/components/console/introduction.rst b/components/console/introduction.rst
index 139bb25bbd5..9dab6a0e9e2 100644
--- a/components/console/introduction.rst
+++ b/components/console/introduction.rst
@@ -223,6 +223,13 @@ verbosity levels::
         // ...
     }
 
+.. note::
+
+    These semantic methods are defined in the ``OutputInterface`` starting from
+    Symfony 3.0. In previous Symfony versions they are defined in the different
+    implementations of the interface (e.g. :class:`Symfony\\Component\\Console\\Output\\Output`)
+    in order to keep backwards compatibility.
+
 When the quiet level is used, all output is suppressed as the default
 :method:`Symfony\\Component\\Console\\Output\\Output::write` method returns
 without actually printing.