A power steering system includes: a first drain passage for draining an oil pressure from a first oil passage, a second drain passage for draining the oil pressure from a second oil passage, and a pair of a first and second switch valves. The print medium has a plurality of signaling components, and each of the detecting devices is able to detect the presence of each of the signaling components. A lid opening mechanism is operated by a foot lever slidably connected to at least one of said legs. Such a configuration provides that after the gaming system provides a currently displayed value of a progressive award to a player at least a first time, the displayed value of that progressive award continues incrementing from the provided value. The speech controls are adapted such that elements of the speech controls can be combined or re-used.