{% with book.0 as chunk %}
<tr>
<td><input type="checkbox" name="select_book" value="{{book.id}}" data-chunk-id="{{chunk.id}}"/></td>
+ <td><a href="{% url 'catalogue_book' book.slug %}" title='{% trans "Lesson settings" %}'>[L]</a></td>
<td><a target="_blank"
href="{% url 'wiki_editor' book.slug %}">
{{ book.title }}</a></td>