ord">unsigned</span> <a class="link" href="../boost/histogram/axis/traits/options.html" title="Function template options"><span class="identifier">options</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">Axis</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
        <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Axis<span class="special">&gt;</sp