ield
       </th>
       <th>
        Type
       </th>
       <th>
        Description
       </th>
       <th>
        Requiredness
       </th>
       <th>
        Default value
       </th>
      </tr>
     </thead>
     <tbody>
      <tr>
       <td>
        1
       </td>
       <td>
        start
       </td>
       <td>
        <code>
         i32
        </code>
       </td>
       <td>
        Start character, inclusive.
       </td>
       <td>
        required
       </td>
       <td>
       </t