I've fixed my problem,
In the Twig documentation (http://www.twig-project.org/doc/templates.html) i've
found this :
{% autoescape false %} Everything will be outputed as is in this block{%
endautoescape %}
So like Chirstophe said, the output escaping is enabled by default. Adding
{%
Hello Christophe,
In my showNews.html.twig i have :
{% block content %}
h2{{ news.titre }}/h2
div id=date_news
iPublished on {{ news.dateCreation.format('d F Y') }}./i
/div
{{ news.contenu }}
{% endblock %}
and in my head i've the meta : meta http-equiv=Content-Type
content=text/html;
