+ * Fired when wiki content is being added to the DOM
+ *
+ * It is encouraged to fire it before the main DOM is changed (when $content
+ * is still detatched). However, this order is not defined either way, so you
+ * should only rely on $content itself.
+ *
+ * This includes the ready event on a page load (including post-edit loads)
+ * and when content has been previewed with LivePreview.
+ *