public static function init() {
		if ( is_admin() && current_user_can( 'manage_options' ) ) {
			add_filter( 'pum_alert_list', array( __CLASS__, 'tips_alert' ) );
			add_action( 'pum_alert_dismissed', array( __CLASS__, 'alert_handler' ), 10, 2 );
		}
		add_filter( 'pum_admin_pointers-popup', array( __CLASS__, 'popup_editor_main_tour' ) );
		add_filter( 'pum_admin_pointers-edit-popup', array( __CLASS__, 'all_popups_main_tour' ) );
		add_action( 'admin_enqueue_scripts', array( __CLASS__, 'set_up_pointers' ) );

		add_action( 'admin_init', array( __CLASS__, 'welcome_redirect' ) );
		if ( ! empty( $_GET['page'] ) && 'pum-welcome' === $_GET['page'] ) {
			add_action( 'admin_menu', array( __CLASS__, 'set_up_welcome_page' ) );
		}
	}