+ *
+ * ## Initializing
+ * The {@link #init} method of the History object must be called before using History. This sets up the internal
+ * state and must be the first thing called before using History.
+ *
+ * ## Setup
+ * The History objects requires elements on the page to keep track of the browser history. For older versions of IE,
+ * an IFrame is required to do the tracking. For other browsers, a hidden field can be used. The history objects expects
+ * these to be on the page before the {@link #init} method is called. The following markup is suggested in order
+ * to support all browsers:
+ *
+ * <form id="history-form" class="x-hide-display">
+ * <input type="hidden" id="x-history-field" />
+ * <iframe id="x-history-frame"></iframe>
+ * </form>
+ *