An app can include an existing web page by loading the web page in a WebView control. You can navigate the WebView control under the Output heading below to a specific URL. Enter a valid URL into the text field and then press the "Enter" key or tap the "Go" button. The "Back" and "Forward" buttons navigate to previously visited sites within the same WebView. If there are no sites in the WebView history, the controls are disabled by observing the canGoBack and canGoForward properties of the WebView.