A method of modulating the human meridian system using a small bar magnet is provided. The handle is a rotatable structure which can support the box body to make the box body stand in an inclined manner, so as to allow the user to have a full clear view of the hand tools inside the tool box. A pivotal mulch door is located within the exit tunnel with the mulch door swinging between two positions. A first input is received from an interactive control. A de-entrainment device with a downwardly angled deflector in vertical alignment with an orifice in the tray deck may be integrated or not with the valve cover below the tray deck. A location of a target field of the header in one or more data units among the plurality of data units is specified, and the one or more data units containing the target field are identified among the plurality of data units.