[jira] [Created] (TIKA-4410) Improve feature extraction from xlsx

[Tim Allison (Jira)]

Tim Allison created TIKA-4410:
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             Summary: Improve feature extraction from xlsx
                 Key: TIKA-4410
                 URL: https://issues.apache.org/jira/browse/TIKA-4410
             Project: Tika
          Issue Type: Task
            Reporter: Tim Allison


There are a number of features that we're not currently extracting from xlsx 
files that would be useful for forensics, digipres and others.

These include:
* hidden sheets
* very hidden sheets
* comments
* threaded comments
* other things



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