graph G {
    compound="true"
    rankdir="TB"
    bgcolor="white"
    fontname="Tahoma"

    node [
        fixedsize="false"
        fontname="Tahoma"
        color="white"
        fillcolor="grey"
        fontcolor="black"
        shape="box"
        style="filled"
        penwidth="1.0"
    ]
    edge [
        fontname="Arial"
        color="#00688b"
        fontcolor="black"
        fontsize="12"
        arrowsize="0.5"
        penwidth="1.0"
    ]




    "kou@clear-code.com" -- "andrew@nerdnetworks.org" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "kou@clear-code.com" -- "dewey@dunnington.ca" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "andrew@nerdnetworks.org" -- "dewey@dunnington.ca" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "marco@crepererum.net" -- "matt@voltrondata.com" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "marco@crepererum.net" -- "neal.p.richardson@gmail.com" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "marco@crepererum.net" -- "andrew@nerdnetworks.org" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "marco@crepererum.net" -- "kgurney@mathworks.com" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "matt@voltrondata.com" -- "neal.p.richardson@gmail.com" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "matt@voltrondata.com" -- "andrew@nerdnetworks.org" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "matt@voltrondata.com" -- "kgurney@mathworks.com" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "neal.p.richardson@gmail.com" -- "andrew@nerdnetworks.org" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "neal.p.richardson@gmail.com" -- "kgurney@mathworks.com" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "andrew@nerdnetworks.org" -- "kgurney@mathworks.com" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "petridish@gmail.com" -- "kou@clear-code.com" [label=" 1 ", penwidth="1", color="#00688b5E"];

}