Sep 16, 2025
For law firms, version control is a constant challenge. Whether you’re negotiating a purchase agreement, updating an employment contract, or reviewing regulatory filings, you’re often tasked with scanning through hundreds of pages to spot changes.
The challenge isn’t just time; it’s risk. Missing a small but material edit can have serious consequences for your client. Yet traditional redline comparisons often force you to wade through entire documents, page after page of unchanged text, in order to confirm what actually matters.
That’s why we built Blackline Summary, a new feature available inside the Walter AI Agent.
What it does
Instead of showing two entire documents side by side, Blackline Summary collapses unchanged sections while preserving 2–3 paragraphs of context around every modification.
This means you can immediately focus on the actual changes, without losing sight of how they fit into the overall agreement.
Why this matters
Efficiency at scale: Complex agreements often run dozens of pages. Blackline Summary lets your team focus only on material edits, saving hours of review time.
Reduced risk: With context preserved around every change, there’s no need to worry about edits being taken out of flow or hidden in a sea of text.
Better client service: Faster, more focused reviews mean quicker turnaround times for your clients, without sacrificing diligence or accuracy.
This is particularly impactful for transactional lawyers, where negotiations move quickly and precision is paramount.
How it works
Blackline Summary isn’t a simple “hide text” toggle. It uses smart collapsing logic to ensure important context is never lost. For example:
The opening paragraphs of a document are never hidden.
Every collapsed section can be expanded instantly if you need to see more.
The feature works seamlessly within the AI agent's document preview pane, compatible with any screen size.
The result is a redline review experience that feels tailored to the way lawyers actually work.
Built into the Walter AI Agent
The Walter AI Agent is designed to help lawyers draft, review, and analyze documents with speed and confidence. Blackline Summary makes it even more powerful, streamlining one of the most tedious but mission-critical tasks in legal practice.
Whether you’re reviewing edits or managing back-and-forth versions in a deal, this feature helps your team work faster, mitigate risk, and deliver better client outcomes.
👉 See the full changelog here and try Blackline Summary today inside the Walter AI Agent.