ftp_base::restore

	function restore($from) {
		if(!isset($this->_features["REST"])) {
			$this->PushError("restore", "not supported by server");
			return FALSE;
		}
		if($this->_curtype!=FTP_BINARY) {
			$this->PushError("restore", "can't restore in ASCII mode");
			return FALSE;
		}
		if(!$this->_exec("REST ".$from, "resore")) return FALSE;
		if(!$this->_checkCode()) return FALSE;
		return TRUE;
	}