+<tr><th>parent</th><td>{% if todo.parent %}<a href="todo?id={{todo.parent.id_}}">{{todo.parent.title}}</a>{% else %}–{% endif %}</td></tr>
+<tr><th>children</th>
+<td>
+<table>
+{% for todo in child_todos %}
+<tr>
+ <!-- <td><input name="link_child" type="checkbox" value="{{todo.id_}}" checked disabled/></td> -->
+ <td>{% if todo.done %}✓{% endif %}</td><td>{{todo.all_days_effort}}</td>
+<td><a href="todo?id={{todo.id_}}">{{todo.title}}</a></td>
+</tr>
+{% endfor %}
+<!--
+<tr>
+<th colspan=2>---</th>
+</tr>
+{% for todo in filtered_todos %}
+<tr>
+<td><input name="link_todo" type="checkbox" value="{{todo.id_}}" disabled/></td>
+<td><a href="todo?id={{todo.id_}}">{{todo.title}}</a></td>
+</tr>
+{% endfor %}
+-->
+</table>
+</td>