Mindmap: note(card) relation (not become child)

I wish I had the option to reveal the relationship between the cards.
This is a feature that can be easily found in the mind map app.

It is not included in the note, but it can be used to visualize when something is related.

I would like to have additional options with dot line, start point arrow, end point arrow, etc.

You mean tag function? Or image search ? (Like a social platforms) ?