This would show all the inlinks pointing to an internal page.
Say I am auditing my images. With this column I could see every inlink to a particular image.
Say I am doing an internal link audit, this could show me every inlink to a particular page.
This is not the same as Internal Outlinks. It's a reverse engineering of it. This would show all the incoming links to the URL in column A cell 1. Not all the outlinks from it. Does this make sense?