-<para>
-If an instance declaration is compiled without
-<option>-XOverlappingInstances</option>,
-then that instance can never be overlapped. This could perhaps be
-inconvenient. Perhaps the rule should instead say that the
-<emphasis>overlapping</emphasis> instance declaration should be compiled in
-this way, rather than the <emphasis>overlapped</emphasis> one. Perhaps overlap
-at a usage site should be permitted regardless of how the instance declarations
-are compiled, if the <option>-XOverlappingInstances</option> flag is
-used at the usage site. (Mind you, the exact usage site can occasionally be
-hard to pin down.) We are interested to receive feedback on these points.
-</para>