Include search for cross references pointing to other documents in Preflight
Until now, cross refs to other documents can kill Indesign in case that other document has been renamed, moved or deleted. ID would then, like, forever try to find that document, slowing itself down to the unability to work with it.
That's why such cross refs should not exist, but they occur when copying text from one document to another. In order to find these cross refs, the only way is to hover with the mouse over the cross refs listing in the cross ref panel. That's annoying. Please include searching for such cross refs to Preflight.
It will be a good idea to add a symbol on the panel for the x-ref that point to an external document