A distinction should be made between "hierarchical links" and "mention links"

The relationship between concept and concept formation is only linked in most software

There is a hierarchy of concepts

So links should have “hierarchical links” and “mention links” such as two

Only in this way can concepts have a clear knowledge level

For example, A links to A1, and 1 links to A1
Here both links should be linked with a hierarchy like [[[A1]]], indicating that A1 has two upper levels

And B links to A1, just mentioning that A1 may need to be considered
A normal [[A1]] link should be used here

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Use Excalibrain and setup your own ontology. Zolt has some videos on how to do this at his channel. It’s really clever as you can have links point backwards, forwards, up, and down using any wording that makes sense to your vault.

Yes, I use excalibrain, too
But excalibrain’s approach is a little tricky
I want a simpler relationship between superiors and subordinates and less stress when taking notes

Most importantly, I think this should be in the official core function, it is a very important concept
Only when it is officially included in the core functionality will more plugins support such usage

Actually, Excalibrain setup is far easier than you may think. You just open the options, go down to ontology and write in what you want to call notes that show up above the open note, below it, to the left, and to the right. Done. Zolt has a lot of examples in these slots, but you can delete them all if you don’t like them. You could just use parent, child, previous, and next.