{# call-only #} {% macro section(name, title=none, class_name=none) %}
{% if title %} {% call header() %} {{ heading(title) }} {% endcall %} {% endif %} {{ caller() }}
{% endmacro %} {% macro header(class_name=none) %}
{{ caller() }}
{% endmacro %} {% macro heading(title, class_name=none) %}

{% if not caller %} {{ title }} {% else %} {{ caller() }} {% endif %}

{% endmacro %}