digraph arbre {
    bgcolor="transparent";
    ranksep="0.75";
    fontname="LiberationSans";
    overlap="compress";
    size = "150, 50";
    mclimit = "100";
    remincross = "true";
    edge [dir=none];
    node [shape = record, margin="0.45,0.05", width=0.1, height=0.2, tooltip=" "];
    
subgraph cluster_familleb0{
style="invisible"; 
            clusterrank="none";
            mclimit = "100";
            ranksep="1"; 
i0  [style="filled", fillcolor="#ffffaa"]  [href="arbre_svg.php?id_pers=0&limite_descendance=23&output=dot", label=" "]
}
}