            expression. Note that this includes the whole match (sub-expression
                    zero), so the value returned is always &gt;= 1.
                  </p>
                </td>
</tr>
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                  <p>
                    <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="identifier">What</span><span class="special">(</span><span class="keyword">int</span>
                    <span cl