tryton/modules/purchase/view/purchase_line_form.xml

<?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. -->
<form cursor="product">
    <label name="purchase"/>
    <field name="purchase" colspan="3"/>
    <label name="type"/>
    <field name="type"/>
    <label name="sequence"/>
    <field name="sequence"/>
    <notebook colspan="4">
        <page string="General" id="general">
            <label name="product"/>
            <field name="product"
                view_ids="purchase.product_view_list_purchase_line"/>
            <label name="product_supplier"/>
            <field name="product_supplier"/>
            <label name="quantity"/>
            <field name="quantity"/>
            <label name="unit"/>
            <field name="unit"/>
            <label name="unit_price"/>
            <field name="unit_price"/>
            <label name="amount"/>
            <field name="amount"/>
            <label id="delivery_date" string="Delivery Date:"/>
            <group id="delivery_date" col="-1">
                <field name="delivery_date" xexpand="0"/>
                <field name="delivery_date_edit" xexpand="0" xalign="0"/>
            </group>
            <separator name="description" colspan="4"/>
            <field name="description" colspan="4"/>
        </page>
        <page string="Taxes" id="taxes">
            <field name="taxes" colspan="4"/>
        </page>
        <page name="moves" col="1">
            <field name="moves"/>
        </page>
        <page name="invoice_lines" col="1">
            <field name="invoice_lines"/>
        </page>
        <page string="Notes" id="notes">
            <separator name="note" colspan="4"/>
            <field name="note" colspan="4"/>
        </page>
    </notebook>
</form>