There is provided an information processing apparatus capable of improving the operability in producing a coversheet in which plural information is written, and preventing generation of a coversheet having an improper layout resulting from the inconsistency in number between the information and fixed character strings. The first signal level is compared to a reference signal level which comparison produces an output signal. When the vehicle speed reaches a predetermined level, a control circuit drives a clutch motor to move the clutch switching unit in releasing the reducing clutch to idle the planet gears, enabling the direct-drive active clutch to be switched on so that the rotor of the motor can rotate the wheel hub directly to accelerate the vehicle speed. The X stage elevatingly supports the Z base and is movable in an X direction. There is also provided a substrate transport apparatus for transporting a substrate holder holding a substrate by means of electrostatic force generated by power supplied from an external source. The quick connection device may include a male portion connected to the headrail and a female portion connected to the covering portion.