A method for processing a contrast picture image of a semiconductor element. The crossmember attachment areas have heights that allow attachment of crossmember portions to the center section at offset heights. The indexing file is utilized as a basis for ranking listings in an index based on the strength of association with a query. The adjustable height of the roller further enables the apparatus to provide calf and hamstring massaging while the muscles are in a relaxed state. The body members and headers are positioned in an axially aligned array with the headers at opposite ends. Flow enters the distributor on one side of the vessel and exits the collector on an approximately opposite side of the vessel.