My apologies if I am repeating what anyone else has said/asked... I simply do not have the time to read through all 15 pages of this discussion! One thing I did notice is people saying they would rather use OneNote because of this feature lacking. Idu... OneNote has notebooks, sections, and pages; EN has stacks, notebooks and notes - what's the difference?
I am a PhD level researcher and have tried every piece of note-taking/annotation software/app to annotate, keep and organise hundreds of academic papers and journals. Some do some things well, but EN has the most of the different functions I need in one place (not ALL, but it minimises the amount of different programs I have to jump between to do different things).
I currently use tags to label notes with areas in the research they are relevant to, but I would like to create another layer(s). Could someone please explain how tag hierarchies are created, or point me to somewhere where it is explained in detail? I do think another level of subnotes would be great, so upvoted this fwiw, but could use some help making what is available work for me in the meantime, thanks!