    </tr>
    <tr>
      <th>numerals</th>
      <td><p>A character specifying the alignment of numerals (<code>"middle"</code>, <code>left</code>, <code>right</code> or <code>asis</code>). I.e. <code>numerals = "left"</code> ensures that no output separator is in front of a digit.</p></td>
    </tr>
    <tr>
      <th>sep_out</th>
      <td><p>(short for separator output) String that will be used as separator. The defaults are <code>"_"</code> 
and <code>""</code>, regarding the specified <code>case</code>