t frames each file contains, allowing random access.Zero-based indexing is used.  (The first
               element will always be zero).&nbsp;
            </td>
         </tr>
         <tr class="summary-item">
            <td class="name">format</td>
            <td class="m-help">Format of image. If this is 'external' then the field external_file contains the path or URL information to that file. For
               tiff, png, jpg, etc, the binary representation of the image is stored in data. If the form