<td>Number of tags changed during writing</td></tr>

<tr><td>CHARSET</td><td>Lookup table for current Charset setting</td></tr>

<tr><td>CHECK_WARN</td><td>Used to return CHECK_PROC warnings</td></tr>

<tr><td>Compression</td><td>Compression for current EXIF IFD (or '' if no Compression tag).
    Valid only in EXIF directories for tags after 0x0103.</td></tr>
    
<tr><td>CUR_LANG</td><td>Hash reference for localized language lookup corresponding
    to current 'Lang' options setting.</td></tr>

<tr><td>CUR