 range of chars from <code class="computeroutput"><span class="identifier">ch</span></code>
                  to <code class="computeroutput"><span class="identifier">ch2</span></code> (inclusive)
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">char_</span><span class="special">(</span><span class="identifier">charset</span><span class="special">)</span></code>
                </p>
              </td>
<td>
 