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# Redact Documents

You can use the `Eduction` task to redact information in documents.

To enable redaction, set the configuration parameter `RedactedOutput=True`. If you want to specify the value or characters that replace the redacted text, use the configuration parameter `RedactionOutputString` or `RedactionReplacementCharacter`.

For example, the following configuration redacts addresses contained in a document's `DRECONTENT` or `ADDRESS` fields:

    [ImportTasks]
    Post0=Eduction:EductionSettings

    [EductionSettings]
    ResourceFiles=C:\Autonomy\IDOLServer\Eduction\address_gb.ecr
    SearchFields=DRECONTENT,ADDRESS
    RedactedOutput=True

The fields specified by `SearchFields` are not modified. CFS places the redacted text in fields with a `_REDACTED` suffix. For example:

    #DREFIELD ADDRESS="Cambridge Business Park, Cowley Road, Cambridge, CB4 0WZ"
    #DREFIELD ADDRESS_REDACTED="[redacted]"

The `Eduction` task also adds the value, offset, and score for any matched entities to the document. For example:

    #DREFIELD /offset="298"
    #DREFIELD /score="1"
    #DREFIELD /value="Cambridge Business Park, Cowley Road, Cambridge, CB4 0WZ"

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