this some this a little bit this uh it of course it comes from the fact of the linearity up here so it's not really an additional restriction but simply to clarify what this means for your environment your environment has to be able to be looked at in terms of these features and these features they need to be cumulative again that comes from the fact that it's linear but to see so a feature like i want an an even number of steps or something like this would be terrible uh because and they're going into things