gistfile1.txt

                        <field name="crawls" widget="one2many_list" nolabel="1">
                            <tree string="">
                                <field name="name" />
                                <field name="enabled" />
                                <field name="crawl_type" />
                            </tree>
                            <form string="">
                                <field name="name" />
                                <field name="enabled" />
                                <field name="crawl_type" />
                            </form>
                        </field>