<tr>
                              <td>
                                <code>
                                <em>dimmingViewAlpha</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>The <code>alpha</code> value for the dimming view used behind
              the presented view controller. The color is black.
              Defaults to <code>0.5</code>. Use <code>nil</cod