modify definition of 'attributes' property following @stof comment and info found on @fabpot website (http://fabien.potencier.org/article/54/create-your-own-framework-on-top-of-the-symfony2-components-part-5)

sberder-lm · sberder-lm · commit 2ef86531f4d5 · 2012-02-15T18:18:20.000+08:00
diff --git a/components/http_foundation.rst b/components/http_foundation.rst
@@ -52,7 +52,7 @@ can be accessed via several public properties:
 
 * ``cookies``: equivalent of ``$_COOKIE``;
 
-* ``attributes``: ``HttpKernel`` uses it to store parameters like routing (``_controller``, ``_route`` and any placeholder used) for example;
+* ``attributes``: information about the Request that is not directly related to the HTTP data. For example, ``HttpKernel`` uses it to store parameters about routing (``_controller``, ``_route`` and any placeholder used);
 
 * ``files``: equivalent of ``$_FILE``;
 
