private function _formMarks($sCurrentMark)
    {
        $oBasket = $this->_getBasket();
        $aMarks = [];
        if ($oBasket->hasSkipedDiscount()) {
            $aMarks['skippedDiscount'] = $sCurrentMark;
            $sCurrentMark .= '*';
        }
        if ($oBasket->hasArticlesWithDownloadableAgreement()) {
            $aMarks['downloadable'] = $sCurrentMark;
            $sCurrentMark .= '*';
        }
        if ($oBasket->hasArticlesWithIntangibleAgreement()) {
            $aMarks['intangible'] = $sCurrentMark;
        }

        return $aMarks;
    }