I want the label of a node to be included in the node, I use for that
label = {[below]: label} but if I do that, the text of the node is written above the label. How to make the contents of the node start only under the label.

```
\documentclass{article}

\usepackage{tikz}

\begin{document}

 \begin{tikzpicture}
 \node[text width=6em,draw,label={[below,draw]:label}] 
 { un texte un peu long sur plusieurs lignes};
 \end{tikzpicture}

\end{document}

```