With a little help from this threat (Thnx again @holroy ): How to create multi-numbered outline - Custom CSS & Theme Design - Obsidian Forum
now this (indentation is crucial):
1. added 1st
- [ ] tdfg (5th)
- [ ] (6th)
1. (4th)
2. added 3rd
3. added 2nd
looks like that (in read mode):
which in my eyes is quite usable
