correlations
or a graphical lasso for plotting? Can be set to "cor" (default), "pcor", or "glasso"</p></td>
    </tr>
    <tr>
      <th>na.action</th>
      <td><p>a function which indicates what should happen when the data
contain missing values (<code>NA</code>s).</p></td>
    </tr>
    <tr>
      <th>weights</th>
      <td><p>weights</p></td>
    </tr>
    <tr>
      <th>formula</th>
      <td><p>A symbolic description of the model to be fit. This
should either be of type <code>y1 + y2 + y3 ~ x1 + x2</c