Btw, I know I sometimes can "sound" a bit angry or strict, it can happen when I write and argue "on the fly". I just removed a sentance from a post which said something like: "I do not understand how hard it can be to calculate etc.." Please do not put any thought to it when I sound like that, I always regret my wording when I read through my posts, but it saves me a lot of time if I know that you all know that I do not intend to appear angry, do personal attacks or anything like that.