or a single element. </li>
<li>
<pre class="literallayout"><span class="keyword">explicit</span> <a name="id677600-bb"></a><span class="identifier">separate_interval_set</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">interval_type</span> <span class="special">&amp;</span> itv<span class="special">)</span><span class="special">;</span></pre>Constructor for a single interval. </li>
<li>
<pre class="literallayout"><a name="id677627-bb"></a><span class="identifie