public static function minimalinit()
 {
     if (!defined('ROOT_URL')) {
         if (p_strlen(ROOT_PATH) > p_strlen($_SERVER['DOCUMENT_ROOT'])) {
             define('ROOT_URL', p_substr(ROOT_PATH, p_strlen($_SERVER['DOCUMENT_ROOT'])));
         } else {
             define('ROOT_URL', '/');
         }
     }
     define('INCLUDE_URL', ROOT_URL . 'Script/');
     define('IMAGES_URL', ROOT_URL . 'Images/');
     define('ADDONS_URL', ROOT_URL . 'addons/');
     define('TEMPLATE_URL', ROOT_URL . 'tpl/');
     define('CACHE_URL', ROOT_URL . 'cache/');
     define('BTN_URL', CACHE_URL . 'btn-');
     DataEngine::conf_cache('perms');
     DataEngine::conf_cache('config');
     // Fix multiple installations/conflit avec forum ou autre soft utilisant les sessions
     session_set_cookie_params(0, ROOT_URL);
     if (!NO_SESSIONS) {
         session_start() or trigger_error('Erreur de session', E_USER_ERROR);
     }
     return self::$initialized = true;
 }