lef.</p>
    </div>

    <div id="ref-usage">
    <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">Clef</span><span class="op">(</span><span class="va">sign</span>, line <span class="op">=</span> <span class="cn">NULL</span>, octave <span class="op">=</span> <span class="cn">NULL</span>, to <span class="op">=</span> <span class="cn">NULL</span>, bar <span class="op">=</span> <span class="cn">NULL</span>, offset <span class="op">=</span> <span class="cn">NULL</span><span class="