'$timeout'=>array('timeout',t("Network timeout"),(x(get_config('system','curl_timeout'))?get_config('system','curl_timeout'):60),t("Value is in seconds. Set to 0 for unlimited (not recommended).")),
'$delivery_interval'=>array('delivery_interval',t("Delivery interval"),(x(get_config('system','delivery_interval'))?get_config('system','delivery_interval'):2),t("Delay background delivery processes by this many seconds to reduce system load. Recommend: 4-5 for shared hosts, 2-3 for virtual private servers. 0-1 for large dedicated servers.")),
'$maxloadavg'=>array('maxloadavg',t("Maximum Load Average"),((intval(get_config('system','maxloadavg'))>0)?get_config('system','maxloadavg'):50),t("Maximum system load before delivery and poll processes are deferred - default 50.")),