TLDR:
Redlining is the process of marking up a document (typically a contract) to show proposed changes, deletions, and additions, standard practice in legal negotiations where parties track revisions.
Redlining Best Practices
Effective redlining requires more than just tracking changes — it requires clear organization of comments and a discipline around what constitutes a substantive change versus a stylistic edit. When sending a redlined document, best practice is to accompany it with a negotiation memo that explains the rationale for major changes rather than leaving the counterparty to interpret intent from context alone. Numbering rounds of negotiation (Redline V1, V2, etc.) and maintaining clean and marked versions separately prevents confusion in multi-round negotiations.
Tooling and Format
Most legal redlining happens in Microsoft Word’s Track Changes mode, with comments used to flag rationale, open questions, and conditional language. Specialized contract negotiation platforms (Ironclad, Juro, LinkSquares, ContractPodAi) automate version comparison, clause libraries, and approval workflows. PDF-based redlines (via Adobe Acrobat comments) are common when one party will not share an editable Word version.
Substantive vs. Cosmetic Edits
Sophisticated redlines distinguish between material changes (allocation of risk, dollar amounts, term length, IP ownership) and cosmetic edits (defined-term consistency, cross-reference fixes, typo cleanup). Burying material changes in long cosmetic redlines is a common counterparty tactic and a key risk for inattentive reviewers. Modern AI-assisted review tools (Lexion, Robin AI, Spellbook) help flag material deviations from a baseline.
Closing the Redline Loop
A negotiation typically closes with a “clean” version — all changes accepted, all comments removed — signed by both parties. Saving both the final clean version and the final marked version is important for future disputes about what was negotiated and why.