omatically";
      }
    }
    private function clickHandler(e: MouseEvent): void {
      if (button.label == "Stop Sound") {
        button.label = "Start Sound";
        channel.stop();
      } else {
        channel = snd.play();
        button.label = "Stop Sound";
      }
    }
  }
}</pre>
         <section class="description"><h2>Description</h2>
            <p>This technique can be viewed in the <a href="https://www.w3.org/WAI/WCAG20/Techniques/working-examples/screen_reader_detection_to_prevent_auto