digraph arch_wayland {
    edge[
        fontname="DejaVu Sans",
        dir="both",
        arrowtail="dot",
        arrowsize=.5,
        fontname="DejaVu Sans",
        fontsize="18",
    ]

    node[
        color=none,
        margin=0,
        fontname="DejaVu Sans",
        fontsize="18",
   ]

    c1 [label=<<TABLE STYLE="rounded" BGCOLOR="#ffbc00"><TR><TD>Wayland Client</TD></TR></TABLE>>, URL="#c1"]
    c2 [label=<<TABLE STYLE="rounded" BGCOLOR="#ffbc00"><TR><TD>Wayland Client</TD></TR></TABLE>>, URL="#c2"]

    comp [tooltip="Wayland Compositor", label=<<TABLE STYLE="rounded" BGCOLOR="#ffbc00"><TR><TD><BR/>Wayland<BR/>Compositor<BR/><BR/></TD></TR></TABLE>>, URL="#comp"]

    impl [tooltip="KMS evdev Kernel", label=<<TABLE STYLE="rounded" BGCOLOR="#ffbc00"><TR><TD>KMS</TD><TD>evdev</TD></TR><TR><TD COLSPAN="2">Kernel</TD></TR></TABLE>>, URL="#impl"]

    c1 -> comp [taillabel="③", labeldistance=2.5, URL="#step_3"];
    c2 -> comp;

    comp -> c1 [label="②", URL="#step_2"];
    comp -> c2;

    comp -> impl [xlabel = "④", URL="#step_4"];
    comp -> impl [style = invis, label="    "];
    impl -> comp [xlabel = "①", URL="#step_1"];

    c1 -> c2 [style=invis];
}