Does LyX complain about broken label or citation references?

[Ramon Felciano]

Hi --

I've noticed that LyX (or LaTeX I guess) doesn't seem to complain about
broken label references. Instead, the reference gets printed with a "?"
indicating that the target couldn't be found. Is there any way to do a
pre-flight of a LyX (LaTeX) document to check the references and make sure
they are all present and accessible?

Thanks in advance for your time!

Ramon