@startdot
digraph handoff_dfd {
    rankdir=LR
    compound=true

    edge [minlen=2 color="#8c1b07"]
    node [fillcolor="#ffb866" style=filled shape=box fixedsize=true width=1.6 height=0.7]

    receiver [label="Receiver"]

    subgraph cluster_trusted {
        label="Trust Boundary"
        style=dashed
        color="#f22430"

        subgraph cluster_producer {
            label="Producer"
            style=filled
            color="#000000"
            fillcolor="#faf9cd"

            libtl [label="LibTL" fillcolor="#ddffb3"]
        }
    }

    libtl -> receiver [label="DF7" ltail=cluster_trusted]
}
@enddot