@dbu I just had another idea to make the xml formats somewhat cleaner. We could set the default namespace to http://cmf.symfony.com/schema/dic/... inside the config element, that means we only need the prefix for the first element (config):

````xml
<container xmlns="http://symfony.com/schema/dic/symfony"
    xmlns:cmf-menu="http://cmf.symfony.com/schema/dic/menu"
>
    <!-- ... -->

    <cmf-menu:config xmlns="http://cmf.symfony.com/schema/dic/menu">
        <menu-basepath>/cms/menu</menu-basepath>
    </cmf-menu:config>
</container>
````

I think it makes the xml format more readable, but it can also confuse people. What do you think?