This is relevant when students can see the citation before the download is made available to them.

In this case there are many reasons why the full-text mightn't be available. It might be waiting for copyright clearance. Or the lecturer might have added visibility dates. At the moment all the student can see is that there's no download, so they may complain to the instructor or the library when they actually just need to be patient.

So while the Download link is suppressed, it would be useful to display a brief explanation. Eg "Restricted until [date]" if a date is known, or "Pending copyright clearance". (This should also display to the instructor when they're previewing the student view.)

These notes should be configurable in the Labels code table. (This would allow libraries that don't want to display them to blank them out.)