A method for training a gas turbine engine test cell operator during a simulated engine test is provided. A method of implementing a secondary identification code is also disclosed. By adjusting the relationship between the length L and width H of the permanent magnet, the air gap magnetic density of the permanent magnet can be effectively increased, i. After the prescan operation has been performed on the image, image manipulations such as rotating, cropping, and zooming can be performed on a selected portion of the image by directly accessing only the encoded pixel image areas to be manipulated, without the need to sequentially decode and store all the encoded image areas in order to locate the ones of interest. At a destination node, data transmitted by the source node is recovered by combining all signals received from the source and relay nodes and then decoding the combined signal. This invention also relates to methods for producing other wheat varieties or breeding lines derived from wheat variety 25W31 and to wheat varieties or breeding lines produced by those methods.