Improve readability of domains in Link Format field

The Link Format field of each resource contains a URL that is applied to one or more web domains for that publisher. The domains appear only in a popup box upon mousing over the text box containing the URL.

In many cases, such as the resource Elsevier Health Resources, the list of domains in the popup box is longer than will actually fit on the screen, and even zooming out in the browser does not allow you to read all of it. I have been looking through Elsevier Link Format fields to see if any of them include Cell Press, and can't establish a definitive answer because I can't see all the domains.

We need the ability to see all the domains applied to a Link Format field, and to search them. Please put the domains in a proper field of their own - ideally one subfield for each domain, for better readability and for sorting - rather than this popup box.