A valve assembly suitable for regulating the flow of fluid between a working chamber of a fluid-working machine and a fluid manifold. The parameter attached to the URL differs each time or within a specific period of time, and moreover, differs from user to user. Pressurized fluid, air, or other material charges the accumulator. Another mechanism mounted within the body for playing the prerecorded message and still another device mounted within the body for recording a user generated message including devices mounted in the body for activating and playing such user generated message. Each of the two monopole antennas includes a first frequency receiving portion adjacent to the bottom, a second frequency receiving portion, and a connection portion located between the first frequency receiving portion and the second frequency receiving portion. If not, the control portion controls a manipulation and display unit to display a guidance for urging a user to exchange the second fixing unit, If both of fixing units in the first and second image-forming portions are fixing units for the envelope, the control unit allows an envelope mode control operation.