The preceding section provided a basic form view, but we can make some improvements to it. For document models, Odoo has a presentation style that mimics a paper page. This form contains two elements: <header> to contain action buttons and <sheet> to contain the data fields.
We can now replace the basic <form> defined in the previous section with this one:
<form>
<header>
<!-- Buttons go here-->
</header>
<sheet>
<!-- Content goes here: -->
<group>
<field name="name"/>
<field name="is_done"/>
<field name="active" readonly="1"/>
</group>
</sheet>
</form>
