A document management system is provided which makes it possible to easily obtain original electronic document data of a printed material from the printed material. A request from a non-satellite system specific side of a transport interface is made to a system specific side of the transport interface for a flow control allocation that specifies an amount of data to be stored in a queue of the system specific side of the transport interface. The simulation method for chip testing comprises steps of: providing a simulation environment corresponding to a chip design; providing at least one set of testing commands; executing the testing commands; and calculating the time required for completing executing the testing commands. The faceted corners of the resistor protect layer reduce the step height of the resistor protect layer.