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

    node [
        fixedsize="false"
        fontname="Tahoma"
        color="white"
        fillcolor="deepskyblue2"
        fontcolor="black"
        shape="box"
        style="filled"
        penwidth="1.0"
    ]
    edge [
        fontname="Arial"
        color="#DC143C"
        fontcolor="black"
        fontsize="12"
        arrowsize="0.5"
        penwidth="1.0"
    ]




    "mod.d" -- "pre.d" [label=" 2177 ", penwidth="10", color="#DC143CFF"];
    "mod.d" -- "post.d" [label=" 1971 ", penwidth="9", color="#DC143CED"];
    "example_modules" -- "mod.d" [label=" 1576 ", penwidth="7", color="#DC143CC9"];
    "post.d" -- "pre.d" [label=" 76 ", penwidth="1", color="#DC143C4C"];

}