The buttons represent a parent -> child path. It is like a specific path in a tree.
The last item might not be unique and it is also not more important than the other items above it.
Another advantage of passing a list in the event is that it is very simple to remove the items underneath the current one. It doesn't happen automatically.
@Erel, I have looked at the post and have a few very basic questions:
1. How do I actually get a copy of XUI V2.10?
2. How do I setup the view? I assume I do it through the Designer.
3. Is there a way to programmatically set the color of each chevron? For instance: Level 1 = Red Alpha 255, Level 2 = Red Alpha 220, Level 3 = Red Alpha 200 etc...