graphviz - How do I add extra space between clusters? -

For nodes, nodesep increases the space between the nodes. Is there any such feature for subfifery cluster

before this link Accordingly, it seems that there is no current solution to the problem.

However, a small "hack" happens with a select number of invisible groups around your cluster, in fact, there is a small margin of groups that can not be changed but they can not be nested. Hiding prey and border is a custom marginalization.