<models>
            <employeediscount>
                <class>Rw_EmployeeDiscount_Model</class>
            </employeediscount>
        </models>

        <helpers>
            <employeediscount>
                <class>Rw_EmployeeDiscount_Helper</class>
            </employeediscount>
        </helpers>

        <sales>
            <quote>
                <totals>
                    <wrapping>
                        <class>employeediscount/total_wrapping</class>
                        <before>subtotal</before>
                    </wrapping>
                </totals>
            </quote>
        </sales>