report. If left unspecified, the title with the name of the supplied dataset.</p></td>
    </tr>
    <tr>
      <th>file</th>
      <td><p>The filename of the outputted rmarkdown (.Rmd) file.
If set to <code>NULL</code> (the default), the filename will be the name of <code>data</code>
prefixed with "codebook_", if this qualifies as a valid file name (e.g. no special
characters allowed). Otherwise, <code>makeCodebook()</code> tries to create a valid filename by
substituing illegal characters. Note that a val