A tool holder has a first tool pouch connected to the front surface of a substrate and defining a first tool compartment between the first tool pouch and the substrate. In one embodiment, the system allows a reduction of the length of the basis function time as compared to conventional OFDM systems. The second handle element terminates in a contact surface having a tapering head configured to be received for pivotal positioning within a socket. Further, a front end portion of the image reading block is located above the sheet discharge space and is arranged at a position shifted toward a rear end side of the main body housing from a front outside wall surface of the main body housing. Alternatively, the electrode may be an implantable electrode coupled to the EMD. A valve arrangement cycles the proportion of fluid directed from the inlet to each of the outlets.