| Constants... | 
          Show molecular constants window. See the constants window for general
            information, and the objects
            section for more information on individual constants. | 
        
        
          | LineList... | 
          Show line list window. See the
            section on line fitting for
            more about using this window. | 
        
        
           Log... | 
          Show log window. The contents of this window is described
            in the section on the log window,
            and more about using this window is given in the sections on
            line fitting and contour fitting. | 
        
        
          |  Residuals...  | 
          Bring up the Residuals Window that plots
            the observed-calculated (or other values) from the most
            recent fit. 
           | 
        
        
          | Intensity
                Residuals... | 
          Bring up the Intensity
              Residuals Window that plots the observed and
            calculated line intensities. 
           | 
        
        
          | Overlays... | 
          Show overlay details | 
        
        
          | States | 
          Show states of a particular J and symmetry. See the states window for more
            information. | 
        
        
          | Transitions | 
          Show selected transitions. More about this window is
            explained in the transition
              window section. | 
        
        
          | Levels | 
          Show an energy level plot. | 
        
        
          | Constants Plot | 
          Bring up the Constants
              Plot Window. 
           | 
        
        
          |  Another Plot  | 
          Open another spectrum window. | 
        
        
          | Single Plot | 
          Close all spectrum plots apart from main
            window. | 
        
        
          |  Arrange Windows  | 
          Try and arrange PGOPHER windows
            around main window. | 
        
        
          |  Bring All To Front | 
          Bring all windows in front of windows from
            other applications. | 
        
        
          | Windows on Taskbar  | 
          Toggle display of all windows
            on task bar or only the main window). 
           | 
        
        
          | Windows on Top | 
          Toggle forcing sub windows to
            be on top of main window. | 
        
        
          | Timing | 
          View time spent in various routines. | 
        
        
          | Memory | 
          Show memory usage. 
           | 
        
        
          |  Threads  | 
          Set the number of independent
            threads of calculation. For simple (quick) calculations and
            single CPU systems leave this set to "single process" as
            there is some overhead associated with parallelizing the
            calculations. For systems with 2 or more CPU's setting the
            number of threads to twice the number of CPU's can result in
            significant speed up. It may be worth adjusting the
            multiple, depending on the nature of the calculation. 
           | 
        
        
          | Clear Log | 
          Clear log window. | 
        
        
          | Clear Cache | 
          Clear any saved calculations. This can be useful to
            prevent PGOPHER
            using too much memory, and may be required if a calculation
            fails. 
           | 
        
        
          | Clear Observed | 
          Clear observed line marks from plot. | 
        
        
          | Calculator | 
          Simple calculator for testing expression evaluation. 
           | 
        
        
          | Text Size | 
          Scale text throughout application - useful
            for demonstrations using a computer projector. The menu text
            is not currently affected. 
           |