lly work.
      </p>
<p>
        The macro <span class="underline"><code class="computeroutput"><a class="link" href="../BOOST_UNIT_1_3_44_10_2_7_5.html" title="Macro BOOST_UNITS_DEFAULT_CONVERSION">BOOST_UNITS_DEFAULT_CONVERSION</a></code></span>
        specifies a conversion that will be applied to a base unit when no direct
        conversion is possible. This can be used to make arbitrary conversions work
        with a single specialization:
      </p>
<pre class="programlisting"><span class="keyword"