1digraph {
2   bgcolor="transparent"; rankdir=LR;
3   { a [shape=circle height="1" style=filled color=AntiqueWhite
4        label="Circle\nLabel"]
5     b [shape=box height="1" width="1" style="rounded,filled"
6        color="#F080F0" label="Square\nLabel"]
7   }
8   a -> b
9}
10