digraph G {

    // Options
    // theme = warm
    // usage = 

    // default settings of graphs
    graph [
        rankdir   = LR,
        color     = "#804000",
        bgcolor   = "#fffff7",
        fontcolor = "#000000",
        fontsize  = 12,
        style     = dashed,
        gradientangle = 65,

                splines = ortho,
        
        
            ];

    // default settings of nodes
    node [
                shape = box,
        style = "filled,rounded",
        
        height    = 0.3,
        fontsize  = 10,

        // theme
        color     = "#c07000",
        fontcolor = "#000000",
        fillcolor = "#ffffff:#ffffc0",
        gradientangle = 295 // left, top -> right, bottom
    ];

    // default settings of edges
    edge [
        color     = "#704000",
        fontcolor = "#704000",
        fontsize  = 10,
        arrowsize = 0.6
    ];

    
    //--------------------------
    // default graph ---- begin
    //--------------------------

    graph [rankdir=TB];

    A  [label="Can it work?"];
    B  [label="Did you touch it?"];
    C  [label="Does anybody know that?"];
    Z1 [label="It's OK! Don't touch it."];
    Z2 [label="Oh! You are such a fool."];

    A -> Z1 [label="Yes"];
    A -> B  [label="No"];
    B -> Z1 [label="No"];
    B -> C  [label="Yes"];
    C -> Z1 [label="No"];
    C -> Z2 [label="Yes"];

    //--------------------------
    // default graph ---- end
    //--------------------------

    
}