l_archive.cpp" target="demo_trivial_archive">
<code style="white-space: normal">demo_trivial_archive.cpp</code></a>.
Of course this program won't produce any output as it is.  But it provides
the starting point for a simple class which can be used to log formatted
output.  See the implementation of a <a href="simple_log.html">simple
log archive</a> to how this has been done.

<h3><a name="implementation">More Useful Archive Classes</a></h3>
The above example is fine as far as it goes.  But it doesn't implem