[texhax] Seeing labels

[Michael Barr]

What I use to see the labels is
\usepackage[notcite,notref]{showkeys}
which puts the labels in the margin.  This is much more useful than a list 
of labels since I can see in the preview or printout what each label 
labels.  Obviously, I take this out before the final printout.  I guess 
without those options I would also see \ref and \cite in the margin, 
although that would have only marginal utility.