I am trying to experiment with a simple hierarchical concept: "Tag" with children "Tag"[0..n] ...
I guess I am not the first, but I have not been very successful at googling this topic.
Could you point me to some non-obsolete resource? (doc, example, video ...)?
I would be particularly interested in importing/exporting textual representations either as a hierarchy:
- a , a1
- a , a2
- b , b1 , b11
(Maybe there could be a topic for beginners?)