redact - pattern

i want define own text patterns redaction adobe pro x (using win 7). text patterns option found under tools/protection/search , remove text.

 

following web page has related pictures , link no info:

http://helpx.adobe.com/acrobat/kb/acrobat-9-search-redact-patterns.html

have tried editing searchredactpatterns.xml file, using existing entries guide? patterns add?

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