The option dialog box sets, shown above, sets several parameters for the program. These are N points Determines the number of points displayed in the main window graph. The pressures ranges between 0 and 0.1. The number of seconds the program waits between pressure samples. A good value is 2.
Log file The file for making log entries.
Log file enable Determines if the log file is updated or not. Okay button is enabled. In effect, the program moves it's own slider in order to keep the pressure at the set point. The program will allow you to move the slider when locking is in effect, but it is not clear why you would want to do this. Setpoint The desired pressure.