To provide a metal mold for forming a preform decreasing the hitting of metal molds at a portion where a slide insert metal mold and a cavity metal mold undergo the sliding yet maintaining the pressure. An intermediary peer creates a map to link peers together in the P2P network. A medial portion of each of a pair of elongated members is rotatably connected to the frame at a respective pivot joint. The toner adheres to the printing form cylinder. The method comprises: synchronizing, in the control of said data-handling module, content of a first external device and at least one file residing in a specific folder of the data processing device, the file being accessible by at least one first application, and the file being generated by means of the first application or the file being directed to the first application, or both.