partner-contact/base_continent/views/continent.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
  <data>

        <record id="view_continent_tree" model="ir.ui.view">
            <field name="name">res.continent.tree</field>
            <field name="model">res.continent</field>
            <field name="arch" type="xml">
                <tree string="Continents">
                    <field name="name"/>
                </tree>
            </field>
        </record>

        <record id="view_continent_form" model="ir.ui.view">
            <field name="name">res.continent.form</field>
            <field name="model">res.continent</field>
            <field name="arch" type="xml">
                <form string="Continent">
                    <group name="main">
                        <field name="name"/>
                    </group>
                    <group name="countries" string="Countries">
                        <field name="country_ids" nolabel="1" readonly="1"/>
                    </group>
                </form>
            </field>
        </record>

        <record id="action_continent" model="ir.actions.act_window">
            <field name="name">Continents</field>
            <field name="res_model">res.continent</field>
            <field name="view_mode">tree,form</field>
            <field name="help">Display and manage the list of all continents that can be assigned to your partner records.</field>
        </record>

        <menuitem id="menu_continent_partner"
            action="action_continent"
            parent="base.menu_localisation"
            sequence="1" groups="base.group_no_one"/>


  </data>
</openerp>