A system and method for displaying information at a fuel dispenser comprises an electrophoretic display that may be configured to operate in low temperature environments. The objects are categorized in accordance with a multi-level category scheme with a first level of categories and a second level of categories subordinate to a respective category of the first level. The process allows the operator to produce elemental chlorine gas and sodium hypochlorite in any product ratio, such that 5% to 100% of the total chlorine produced by the process can be converted to high strength bleach. It is determined that a location of the mobile station cannot be determined according to the identified pilot signals. Also, the decision section judges the occurrence factor in the paper jam to be an image forming apparatus-induced factor when the second detecting section detects a state in which the lever is swung over the first position in the state where the first detecting section detects the paper jam.