Elgg-Lorea-Hydra/mod/messages_extended-1.1/languages/en.php

<?php
/**
 * Messages Extended language files
 *
 * @package messages_extended
 * @license http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU Public License version 2
 */

$en = array(
    'messages_extended:history:title' => 'History'
);

add_translation('en', $en);