Design. Hmmmm, what is that and what can you eat it with? The aspiration to comfort , to create, to behold is peculiar to us. All that pleases our eye s and provides comfortable existence, takes not the last place in our life. It is founded in our nature. Since caveman’s time the arrangement of the environment is necessity. The aspiration to improve, both technically and aesthetically, the place of our dwelling, is requirement of a human nature. So, what do we call design? This is the art of the artistic designing. To make everything beautiful, comfortable, qualitative, with the calculation of all subtleties, and also personal preferences is a problem not of the easiest ones. And this problem also demands good knowledge of business, the creative approach, the mathematical analysis and applied experience of professionals «Treesart»