A positive resist composition comprises a resin component which becomes soluble in an alkaline developer under the action of an acid and an acid generator. In one embodiment, a storage system comprises a processor; a memory; and a storage controller. The flight attendant then says one or more specific words stored as a vocabulary within the personal alert unit. The cement applicator can be configured to apply a bone cement between the bone and the prosthetic component following alignment between the prosthetic component and the bone or another prosthetic component.