The title says it all, or at least the most important point; this would be helpful particularly when editing. It would also be good if this page could say (in the appropriate entry under Limitations) when the index is updated or even when it was last updated.

Particularly when it says No matching positions found it would be good to say No matching positions found as at 2018-04-17 23:00 CET. I do not know if one can get the time zone from the browser; if so, it would be good to present the result in the users zone, which does seem to be the way page history and the time stamp at the bottom of the page work.