solve and quit

The other two options visible on the screen are solve and quit. Solve may be selected by moving the highlighting bar until it is over solve and then pressing the Enter key, or by pressing the letter `s'. This begins the calculation of the - coverage tracks using the parameters as they are currently shown on the screen. During the calculation, the fraction of the observing time for which calculations are complete is displayed on a scale that replaces the message bar at the bottom of the screen. The quit option may also be selected by using the highlighting bar or by pressing the `q' key. This option is used to leave the program once the user is finished with it.