What is Redline?
A version of a document that marks every change against the earlier version, with insertions and deletions shown. It lets a reviewer see exactly what an AI tool or the other side changed.
v1 → v2 · 3 changes · every one marked
A redline shows…
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In real work
Nico asked the assistant for a redline against the client's last draft, so the partner could see each change without rereading forty pages.
In the illustration
Sheets v1 and v2 feed through the gate together. Where they differ, the ruling pen marks the sheet coming out: one deleted line struck through, one added line underlined, one changed number ringed.
Compare the two versions of this sample contract in your legal AI tool and produce a redline: every insertion and deletion, grouped by clause, with one line on what each change does. Flag any change that shifts risk.
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