] fixup for PreviewImage pointers when writing JPEG images</td></tr>
    <tr valign='top'><td>IsShort</td><td>-</td><td>flag indicates PreviewImage pointers
    are 2-byte (instead of 4-byte) integers</td></tr>
    <tr valign='top'><td>IsTrailer</td><td>-</td><td>flag indicates image should always be written as a JPEG
    trailer, even if it fits inside the APP1 EXIF segment (as with Samsung STMN maker notes)</td></tr>
    <tr><td>Relative</td><td>-</td><td>flag to indicate that pointer offsets are relative