<?xml version="1.0"?>
<!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
this repository contains the full copyright notices and license terms. -->
<tree sequence="sequence">
    <field name="extra" expand="1"/>
    <field name="sale_amount"/>
    <field name="product" expand="1"/>
    <field name="quantity"/>
    <field name="unit"/>
    <field name="free"/>
</tree>
