The idea I understand of what I wrote awhile back ago is that you can navigate around your notes using the graph view, then select notes which get added to a table of contents meta-data that gets tracked in its own tab.
The idea comes from Zettelkasten^3
If you look on the right hand side, you will see the open tab called “note sequences”. Essentially each note has a possible table of contents under it and you can add any note to any other note sequence. The creator of this open source software had a bunch of good ideas for the creation of a digital zettelkasten.