mented if non-zero to begin with</td></tr>

<tr><td>DIR_COUNT</td><td>Hash reference for counters of various types of directorys (ICC, IPTC,...)</td></tr>

<tr><td>DIR_NAME</td><td>Name of directory currently being processed</td></tr>

<tr><td>DOC_COUNT</td><td>Number of top-level embedded sub-documents processed while
    extracting, or 0 if none were processed</td></tr>

<tr><td>DOC_NUM</td><td>Current document number while extracting (0, '' or undef for the
    main document)</td></tr>

<tr><td>DoneID3</