| ``filter``
==========
Filter sections allow you to apply regular Twig filters on a block of template
data. Just wrap the code in the special ``filter`` section:
.. code-block:: jinja
    {% filter upper %}
        This text becomes uppercase
    {% endfilter %}
You can also chain filters:
.. code-block:: jinja
    {% filter lower|escape %}
        <strong>SOME TEXT</strong>
    {% endfilter %}
    {# outputs "<strong>some text</strong>" #}
 |