title: Using NSWindowController to manipulate a window
body: <p>I have the following code:</p>
  
  <pre><code>AXWindowController *controller = [[AXWindowController alloc] 
  initWithWindowNibName:@"ActivateWindow"];
  [controller showWindow:nil];
  </code></pre>
  
  <p>How do I use controller to make changes to the window ActivateWindow (eg. changing text on the window, etc.)? Step by step instructions would be appreciated. Thanks!</p>