ions(), then neither <code>--option</code> nor
<code>--no-option</code> was seen.</p>
</dd>
<dt class="hdlist1"><code>OPT_BIT(short, long, &amp;int_var, description, mask)</code></dt>
<dd>
<p>Introduce a boolean option.
If used, <code>int_var</code> is bitwise-ored with <code>mask</code>.</p>
</dd>
<dt class="hdlist1"><code>OPT_NEGBIT(short, long, &amp;int_var, description, mask)</code></dt>
<dd>
<p>Introduce a boolean option.
If used, <code>int_var</code> is bitwise-anded with the inverted <code>mask</code