 <code>styleMask:</code> is a sequence of bits that specify
    which window features are turned on. The <code>backing:</code>
    argument is a constant of type <code>NSBackingStoreType</code>
    that specifies how Cocoa will draw the contents of the
    window. Finally, the <code>defer:</code> argument is a Boolean
    that determines whether to display the window as soon as it's
    created.</p>

    <p>Next, we'll create data values to pass in these parameters, so
    that we can display our new window