difficult to see hierarchy in treemap

[bmesuere]

When you look at the treemap, it's kind of hard to spot the hierarchy of the folders at a glance. The tree at the right offers some help but only when you mouseover the nodes.

If you run the demo script and switch to file count as area, it's hard to see if the tmp and var folders are under / or /user.

Maybe a border that groups elements could help?