In its preferred embodiment, the fast-erecting portable structure principally comprises two or more flexible framing rods and a flexible skin. A positioning slideway and an escaping slideway are defined in the bracket. An auger feeds the particulate material adjacent the outlet side of the flow restrictor whereby particulate material in a feed tube surrounding the auger is drawn into the pneumatic conveying line. The carbohydrate source can be maltodextrin, the fat or oil source can be canola oil andor milk fat, and the protein source can be whey protein, casein, a casein salt, or a mixture thereof. Then, the control unit 102 executes a process related to the display of the window by a window-group basis on the window group information registered on the window group management DB 121 and the window information registered on the window management DB 119. The first sheet is provided with removable portions and a permanent adhesive directly applied on its second major surface and a temporary adhesive directly applied on its second major surface.