Any idea how to inherit the report below in order to include paperformat atribute?

        <report 

            id="action_report_saleorder"

            string="Quotation / Order"

            model="sale.order" 

            report_type="qweb-pdf"

            file="sale.report_saleorder" 

            name="sale.report_saleorder"

            print_report_name="(object.state in ('draft', 'sent') and 'Quotation - %s' % (object.name)) or 'Order - %s' % (object.name)"

        />