Cosmology Applet  Controls Explained 
INSTRUCTIONS:
Entering Data: At the bottom of the applet you will see a table for entering data. For each cosmology case you may enter a Hubble Constant, a mass parameter, and an acceleration parameter. Any invalid values or values outside these ranges will automatically be set to the closest appropriate value. Note: Only cosmology cases with valid values for the Hubble Constant and one of the parameters will be calculated. Plotting Results: To plot your results click on the graph, or select your plot type (Lookback, Age, or Size) from the pulldown menu. Analyzing Results: You can trace your data by clicking the trace checkbox below the graph and then clicking on the graph pane to give it the keyboard's focus. You can then use the left and right arrow keys on your keyboard to traverse a plot. The up and down arrows will cycle though the different cosmology cases. You can overlay data onto the Age plot by clicking the 'Edit Data Points' button. After entering the data values click the graph again to see the data points overlay. You can return to editing the cosmology cases by clicking the 'Edit Cosmologies' button. 
CONTROLS:
