// define the widgets as a list of property/value pairs
    // note that a list containing just a number reserves a space equal to that number of widgets
    AvgHead = list ('text', "Averaging", 'Horizontalalignment', 'center', 'Backgroundcolor', White);
    
    LinAvgLabel = list ('text', "Linear Avg", 'Horizontalalignment', 'right');
    LinAvgValue = list ('edit', string (LinAvg), 'tag', "LinAvgValue", 'Backgroundcolor', White);
    
    OverlapLabel = list ('text', "Overlap", 'Horizontalalignment', 'right');
    OverlapValue = list ('edit', string (Overlap), 'tag', "OverlapValue", 'Backgroundcolor', White);
    OverlapUnits = list ('text', "%", 'Horizontalalignment', 'left');
    
    ExpAvgLabel = list ('text', "Exp Avg", 'Horizontalalignment', 'right');
    ExpAvgValue = list ('edit', string (ExpAvg), 'tag', "ExpAvgValue", 'Backgroundcolor', White);
    
...

    SimTypeLabel = list ('text', "Sim Method", 'Horizontalalignment', 'right');
    Sim1Button = list ('radiobutton', "None", 'tag', "Sim1Button",...
        'callback', "ChangeSim(1)", 'Horizontalalignment', 'left');
    Sim2Button = list ('radiobutton', "Cont", 'tag', "Sim2Button",...
        'callback', "ChangeSim(2)", 'Horizontalalignment', 'left');
    Sim3Button = list ('radiobutton', "Discr", 'tag', "Sim3Button",...
        'callback', "ChangeSim(3)", 'Horizontalalignment', 'left');
    Sim4Button = list ('radiobutton', "FFT", 'tag', "Sim4Button",...
        'callback', "ChangeSim(4)", 'Horizontalalignment', 'left');
        

...
    ButtonEx = list ('pushbutton', "Exit", 'tag', "ExitButton",...
        'callback', "ChangeState(EXIT)", 'Backgroundcolor', Blue);
    
    // set up GUI as a page consisting of a list of lines (initially empty)
    Page = list ();
    
    // fill in each line of the GUI as a list of widgets or N-widget-wide blank spaces
    // these will be placed on a line of the GUI spaced evenly horizontally
    // some blank lines are needed at the top to ensure the first GUI line can be seen in SciLab 5.1
    // do this by inserting 5 lines of: Page($+1) = list (1);
    Page($+1) = list (AvgHead);
    Page($+1) = list (LinAvgLabel, LinAvgValue, list (1), OverlapLabel, OverlapValue, OverlapUnits);
    Page($+1) = list (ExpAvgLabel, ExpAvgValue, list (1), DofLabel, DofValue, list (1));
    Page($+1) = list (1);

...

    Page($+1) = list (ButtonLo, ButtonHi, ButtonAb, list (1), ButtonAp, ButtonEx);
    
...

    // display the GUI, using the page details, the GUI properties and the default widget properties
    GuiHandles = guimaker (Page, list (Title, Width, Height, Space, LightBlue),...
        list ('Backgroundcolor', LightBlue));