exture mapping,
            and depth-buffering are ignored by <code class="function">glClear</code>.
        </p>
        <p>
            <code class="function">glClear</code> takes a single argument that is the bitwise OR of several
            values indicating which buffer is to be cleared.
        </p>
        <p>
            The values are as follows:
        </p>
        <div class="variablelist">
          <dl class="variablelist">
            <dt>
              <span class="term">
                <