An inflator having a body, an aperture in the body, and a diffuser housing is disclosed. The resistance through the tube is decreased as the pressure within the container decreases so as to maintain a substantially constant flow rate throughout dispensing. If not found, an icon is presented instead, by which the user can select a user interface that allows selection of another card file that meets that meet the website’s requirements. When the values of the corner radii increase, the update of the reference radii is ended. Related apparatus, systems, techniques and articles are also described. The optical component is capable of condensing light emitted from the light-emitting element.