
                (as defined by <code class="methodname">set_errprefix()</code>),
                an optional <code class="literal">printf</code>-style formatted message,
                the DB error message associated with the supplied error code, 
                and a trailing newline.
            </p>
              </li>
              <li>
                <p>
                <code class="methodname">errx()</code>
            </p>
                <p>
                Behaves identically to <code class="me