I'm not sure, if we're talking about the same thing, Leonid. I mean permission levels and switches for on and off for different allowed tasks (create new, delete, etc.). What's the necessary space for a boolean? A byte? If I have, for instance, 10 levels and a module like Ads, with maybe 10 different permission tasks, that would give a 100 bytes to save to the db. That would be acceptable, wouldn't it? Or did I get you wrong?