<td><p>Atomic character vector,
indicating which color to assign to
the selected elements.</p></td>
    </tr>
    <tr>
      <th>linetype</th>
      <td><p>Atomic character vector,
indicating which linetype to assign to
the selected elements.</p></td>
    </tr>
    <tr>
      <th>size</th>
      <td><p>Atomic character vector,
indicating which size to assign to
the selected elements.</p></td>
    </tr>
    <tr>
      <th>alpha</th>
      <td><p>Atomic character vector,
indicating which alpha to assign to
th