Is there a shortcut to open a bookmark (not drag & drop) with mouse click in a panel?

Is there a shortcut to open a bookmark (not drag & drop) with mouse click in a panel, here

in scrivener?

Right button click > Open in Current Editor.
Actually, just selecting it, Scrivener opens RTF-files in de preview pane beneath the bookmarks already.
Dubbele-clicking wil open it in a Quick Reference Pane.
Click > [Enter] does nothing.
Dragging the Bookmark in the Editor creates an Internal Link in the current document.

There is intended to be two additional things here:

  • Enter to activate the link. At the moment you can move the cursor into the list with a shortcut… but then not much beyond that.
  • A setting in Behaviors: Document Links, similar to the existing one for clicked links, that changes what happens when you double-click or press enter.

Right button click > Open in Current Editor.
Does not work here, it opens below the bookmarks.

Actually, just selecting it, Scrivener opens RTF-files in de preview pane beneath the bookmarks already.
Dubbele-clicking wil open it in a Quick Reference Pane.
Click > [Enter] does nothing.
Dragging the Bookmark in the Editor creates an Internal Link in the current document.

Yes, the same here.

But how could I open (without dragging, dropping) a doc in the panel in the middle?

Enter to activate the link. At the moment you can move the cursor into the list with a shortcut… but then not much beyond that.
Sorry, what link? The bookmark? Activate the link, what does that mean? What shortcut? Sorry again for understanding nothing.

So it seems there is no way to open a bookmark in the / an editor / panel in the middle by just double clicking it.

How could one avoid clicking / selecting a bookmark open the doc / folder in the panel below the bookmarks?

And how could one make Scrivner not to adjust the size of the bookmark window and the editor beneath each time when starting Scrivener? So one eacht time would not to have to reset that after starting for all the projects.