Is it possible to implement a hierarchy of pages and directories like this:
[fruit]
|--kiwi.md
|--banana.md
|--[red_fruit]
|--strawberry.md
|--apple.md
[vegetables]
|--tomato.md
|--cucumber.md
fruit and vegetables would be shown in the navigation links, but the sub-directory red_fruit would not be. It would be displayed in the same list as apple and banana. red_fruit would be a link to the list page with its children.
Maybe this is problematic because items doesn't collect the sub-directory.