td><td>Set to 1 if audio file was scanned for ID3,
    or 2 if there was an ID3v1 trailer found</td></tr>

<tr><td>DROP_TAGS</td><td>Flag to exclude "Drop" tags when writing</td></tr>

<tr><td>DUPL_TAG</td><td>Hash of last used tag key index numbers for each duplicate tag.</td></tr>

<tr><td>EDIT_DIRS</td><td>Hash of parent directories for each directory edited during
    writing (Note: entry may exist but be undefined for top-level
    directory!)</td></tr>

<tr><td>ESCAPE_PROC</td><td>Routine for XML or H