digraph G {
subgraph cluster_0 {
label = "hello world";
a -> b;
a -> c;
color = hot_pink;
}
subgraph cluster_1 {
label = "MSDOT";
style= "dashed";
color=purple;
x -> y;
x -> z;
y -> z;
y -> q;
}
top -> a;
top -> y;
y -> b;
}