uted and stored along with the covariance;
    for <code>print.summary.merMod</code>, indicates whether the correlation
    matrix of the fixed-effects parameters should be printed.  In the
    latter case, when <code>NULL</code> (the default), the correlation matrix
    is printed when it has been computed by <code>summary(.)</code>, and when
    \(p &lt;= 12\), and the cutoff <code>12</code> may be modified by
    <code>options(lme4.summary.cor.max = &lt;n&gt;)</code></p></dd>

  <dt id="arg-use-hessian">