… d’après le patron d’Ozone. 
“To make this work, we believe this means that open class should be supported, but with manufacturers, test houses and associations adding a new EN Class to allow for an Open Class with certain restrictions. As there is currently a WG6 group finalising the latest standards, we think it is a perfect and responsible time to add this new class. This may also help ensure that the EN D class is not ruined by being pushed too far.”