A patient support apparatus a frame, an emergency switch, and a controller. The scan cell circuit alternatively provides access to the first scan cell segment and the second scan cell segment based on a state of the scan cell circuit. The magnetic suspension system includes an array of magnet members disposed between the shaft and the housing. Most preferably, the volatile combustible materials in the coke product typically may be in the range of from about 15% to about 30% by weight. If the vectors are not parallel, rotate the second vector image until the second vector is parallel to the first vector.