Search for all node's parents (including where the node is referenced)

Explain the problem as you see it

There are very limited ways of extracting content relations based on simple outline position – most of existing features are based on fields' values.

Why is this a problem for you?

I have a tree like this:
– Note A
–– Note B
– Note C
–– [[Note B]] (a reference)

I would like to have a search for all Note B parents, so that it will have results:
– Note A
– Note C

Currently, to have information of node's hierarchy, I always need to have fields on every node and when the node is a reference, I need to fill them in manually (like creating #synthesis note based on several nodes moved from other locations).

Suggest a solution

Add two search operators:

1/ PARENT_OF
In the previous example it would look like [>PARENT_OF: Note B], result: Note A.

2/ PARENT_OF_WITH_REFS
In the previous example it would look like [>PARENT_OF_WITH_REFS: Note B], result: Note A, Note C.