  A compactification over $\overline{M}_g$ of $M_{g,n}$ is obtained by
considering the relative Fulton-MacPherson configuration space of the universal
curve. The resulting compactification differs from the Deligne-Mumford space
$\overline{M}_{g,n}$. In case $n=2$, the compactification constructed here and
the Deligne-Mumford compactification are essentially the distinct minimal
resolutions of the fiber product over $\overline{M}_g$ of the universal curve
with itself.
