Hi 
If we have a graph Mermaid containing many subgraphs which have their own subgraphs, i.e. we have a very complex graph with many levels (e.g. 10 levels State diagrams or Flowcharts), can they be displayed in some way so that only subgraphs up to a certain level (e.g. 3) are visible? In other words, is it possible to collapse the views of some of the lower level graphs?