wasted work, but there is no avoiding it. You should therefore do
your best to have as few orphan modules as possible.
-</para><para>
-You can identify an orphan module by looking in its interface file, M.hi. If there is a ``!'' on
-the first line, GHC considers it an orphan module.
+</para>
+
+<para> You can identify an orphan module by looking in its interface
+file, <filename>M.hi</filename>, using the
+<option>--show-iface</option>. If there is a ``!'' on the first line,
+GHC considers it an orphan module.
</para>
</sect2>