A method to identify database triggers in a data processing system. In one case, some cylinder air-fuel ratios are modulated between stoichiometry and rich, while others are modulated between stoichiometry and lean. In some examples, different roping ratios are used for the load bearing members. The spring fingers contact the exhaust gas component. A first augment can define a first receiving bore and a first stepped surface. Further, the printer obtains actual image data from the STB after performing the layout for printing based on the received vertical and horizontal sizes and executes printing page by page.