require_once './classes/class.ilUtil.php'; ilUtil::sendSuccess('Success! Your changes have been saved.');In this example, when the user saves changes to a form, sendSuccess is called with the success message as the parameter. This method belongs to the ILIAS PHP library, which is a package library for the ILIAS LMS (Learning Management System) that provides a set of reusable PHP classes that simplify the development of ILIAS modules.