digraph dotfile{ 
node [fontname=arialuni,fontsize=10,color=Black,fontcolor=Blue];
edge [fontname=arialuni,fontsize=10,color=Darkgreen,fontcolor=Red];
orientation=TB

// -------------------- labels --------------------


// -------------------- nodes --------------------

""[shape="ellipse",lable=""];
"name"[shape="box",label="Johnny Lee Outlaw"];
"mbox"[shape="ellipse",label="mailto:jlow@example.com"];


// ------------------ subgraphs ------------------


// -------------------- arcs --------------------

""->"name"[label="foaf:name"];
""->"mbox"[label="foaf:mbox"];
}