\vbox{
\begin{mdtask}[
    frametitle={ {{- cat.name -}}
        {%- if cat.referent %}\quad\referent{ {{-cat.referent-}} }{% endif %}
        {%- if cat.time %} \hfill{} \heure{ {{-cat.time-}} }{% endif %}}
]
{{ cat.descr|md_format|escape_latex }} \\
{% if cat.notes %}\textit{ {{- cat.notes -}} } \\
{% endif -%}
\begin{tabular}{c l l l l l}
{% for g_id in cat.assigned %}  {% include 'groupe.tex.j2' %}
{% endfor -%}
\end{tabular}
\end{mdtask}
}