Tools | Compare and Merge Documents, Legal blackline

If you enable this policy setting, a comparison between two documents automatically generates a new Legal Blackline document, leaving the original documents unchanged.

Supported on: At least Windows Vista
Registry HiveHKEY_CURRENT_USER
Registry Pathsoftware\policies\microsoft\office\14.0\word\options\vpref
Value Namefdefaulttocompare_1176_1
Value TypeREG_DWORD
Enabled Value1
Disabled Value0

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