A product management display system for merchandising products on a shelf includes a rail mounting clip structure for removably coupling a front rail to a shelf, the shelf having a channel structure extending along a portion of a front edge. In addition, the method includes fixing a head slider on the slider supporting member so that the head terminal faces the terminal of the slider supporting member and contacting a conductive ball member to both of the head terminal and the terminal of the slider supporting member. Fuel injection control is performed so that when temperature of the catalyst becomes higher than a predetermined temperature, fuel injection in the expansionexhaust strokes is performed for a period of a predetermined ratio in a selected cycle period. , web browsers, must be configured to enable acceptance of speech input from the user. In one example, the ball is adapted to be received within the recess by a snap-fit engagement with the at least one arm.