A removable medium recording station records medical image data in a format and removable medium that are widely accepted. In the method a dipole source is located at an excitation location corresponding to a segment of the electromagnetic source to be simulated. A cross member 22 spans across the right and left side sills 13 at positions forward of the joint sections and in the vicinity of the joint sections. Through a grouping hierarchy, which may also be expressed in the form of an equivalent tree, the Hierarchical Scheduling Language combines the ability to stress related logical areas of the system with the possibility of applying high-level scheduling requests. The bolt portion includes a C-shaped channel adapted to be secured around tubular gate members and a sleeve in which the channel bolt slides.