The invention concerns compositions based on pullulan and a setting system for the use in pharmaceutical, veterinary, food, cosmetic or other products like films for wrapping food, aspics or jellies, preferably for predosed formulations like soft or hard capsules. Received signals from various cells are grouped into layers, with each layer comprised of received signals which are comparable within a particular metric. A superhydrophobic surface can include a heterogeneous surface. The method also includes the steps of turning the light source off and varying the intensity of the light source.