- * @param {Mixed/Object} el The new element or a DomHelper config of an element to create
- * @return {Ext.core.Element} this
+ * @param {String/HTMLElement/Ext.Element/Object} el The new element (id of the node, a DOM Node
+ * or an existing Element) or a DomHelper config of an element to create
+ * @return {Ext.Element} this