[ashwken]

From the Data Explorer set focus to the (source) Item you wish to Link.

Perform Quick Search for "destination" Item, should be revealed in Search Results Pane.

Move your mouse to the Data Explorer and right-click-hold-drag-drop the "source" Item onto "destination" Item in the Search Results Pane, will create a Linked child Item of the "source".

It would seem that this method does not allow for a Copy or Move (Cut).

Here you would need to Copy or Cut the "source" Item first, then perform the Search - double-click on the "destination" Item revealed in the Search Results which moves focus to this Item in the Data Explorer, now right-click on "destination" Item in the Data Explorer and do a Paste function.

Unless there's a different way, but I hear what you're saying.