Nicedoc allows the use of Graphviz. It defaults to generating SVG from the contents of a graphviz:dot labelled block. Simply write things in your block as if you would write a normal dotfile.
```graphviz:dot
digraph {
rankdir=LR;
a -> b;
b -> c;
c -> d;
d -> a;
}
```
Showing a path
```graphviz:dot
graph {
rankdir=LR;
a -- b[color=red,penwidth=3.0];
b -- c;
c -- d[color=red,penwidth=3.0];
d -- e;
e -- f;
a -- d;
b -- d[color=red,penwidth=3.0];
c -- f[color=red,penwidth=3.0];
}
```