digraph {
    Root [shape="point"]
    UserRoot [shape="point"]
    FirstOutput [shape="point",color="blue"]
    NextOutput [shape="point"]
    Value [label="__returned__"]

    Root -> UserRoot [label="username"]
    UserRoot -> FirstOutput [label="'output'",color="blue",style="dashed"]
    FirstOutput -> NextOutput [label="'next'",color="blue",style="dashed"]
    UserRoot -> NextOutput [label="'output'",color="green",penwidth=4]
    FirstOutput -> Value [label="'value'",color="blue",style="dashed"]
}