s automatically the libraries, functions and global variables of the, potentially user-defined, functions <code>fit.fun</code>, <code>complexity</code> and <code>aggregation.fun</code>, see function <code>extract.fun</code>. Can be set to NULL, e.g. if no libraries, functions and variables are needed. Alternatively, use argument <code>load.all</code>. See Details.</p></td>
    </tr>
    <tr>
      <th>load.vars</th>
      <td><p>a named list with global variables required for computation on cluster nodes. S