Click the Review tab.
Click the Track Changes button.
Then click Change Tracking Options.
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Specify the markup options:
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Insertions: Marks inserted text.
Deletions: Marks deleted text.
Formatting: Marks formatting changes.
Changed Lines: Sets the location of vertical line that marks changed paragraphs.
Comments Color: Sets the color applied to all comments.
Specify the balloons options:
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Use Balloons (Print and Web Layout).
Sets display option for balloons.
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Preferred width: Sets balloon width.
Margin: Sets margin location for balloons.
Click OK.
