m"><em class="parameter"><code>blue</code></em>, </span>
              <span class="term">
                <em class="parameter">
                  <code>alpha</code>
                </em>
              </span>
            </dt>
            <dd>
              <p>
                    Specify whether red, green, blue, and alpha are to be written
                    into the frame buffer.
                    The initial values are all <code class="constant">GL_TRUE</code>,
                    indicating that t