A mushroom-type hook strap for mechanical fasteners has a series of hooks integrally formed on the strap, with each hook formed by a polygonal shape situated on top of an axis of a single stem, thereby forming a mushroom type hook having a polygonal head portion on the axis of the single stem, with protruding portions in substantially every direction for engaging fabric loops of a loop strap. A linkage assembly is employed that is coupled to each of the one or more pivots. The mobile device is connected to a roaming network and thus, the first message is sent using the messaging services of the roaming network. A result of the protocol processing step is fed back to the to the modulation event tokens managing. In one aspect, the substrate is rotated about its vertical axis when the seed layer of substrate is immersed in the electrolyte solution during the metal film deposition. The returning beam of a light beam emitted from a selected one of the semiconductor laser chips is diffracted by the corresponding one of said holograms to be received by a light-receiving element.