The closure has a bung bushing of elastic material which fits sealingly into the charging hole of the container. The ventilation mask includes an upper hood and a toroidal tube. These Euclidean portions are then mapped with an L-system generated pattern. The lower sheet further includes a plurality of upstanding pillar portions spaced about the periphery of the main body portion and the upper sheet further includes a plurality of downstanding pillar portions spaced about the periphery of the upper sheet main body portion and fused to respective upstanding pillar portions of the lower sheet to form spaced pillar structures. An aspect of the invention is the use of a local camera, mounted on or near the robotic end-effector in a fixed relationship with the cue, to improve the positioning error of the robotic device prior to placing a shot. The chest cushion receives the passenger’s chest in a forward leaning position.