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Clicking on the two-dimensional icon brings up a two-dimensional display like this. In this display, the 20 kPa column has been selected. Values can be changed by clicking and dragging any of the small circles on the graph line. If you want to change values for other levels of manifold pressure, you simply select the desired kPa column, click and drag as desired. You can also change the display to show a table along with the 2-d display. Different display modes make it easier to see specific types of problems or inconsistencies.