A short glossary of the data room terms that actually come up in a deal

Permission group: a set of viewers who share the same access rights within a room, for example one bidder team in a competitive auction, configured once and applied to every member rather than set individually. Granular permissions: the ability to set access rights, view, download, print, at the level of an individual document and an individual viewer, rather than only at the folder level.

Fence out: a security feature, common in enterprise platforms, that restricts a viewer to seeing only a specific area of a document, most often used to hide a signature block, a name or a price on a page while still letting the viewer read the surrounding text. Revocation: withdrawing a viewer's access, which in a well built platform applies retroactively to documents already viewed through the platform's own viewer, not only to future access.

Dynamic watermarking: a watermark generated at the moment a document is viewed or printed, stamped with that specific viewer's name, email address and a timestamp, as distinct from a static watermark that is the same for every viewer and therefore useless for tracing a leak back to its source. Audit trail: the full log of every action taken in a room, who viewed what, when, for how long, and what was downloaded or printed, usually exportable for later reference.

Redaction: permanently removing or obscuring specific content from a document, typically personal data or highly sensitive commercial terms, before it is uploaded or before a specific viewer group can see it, distinct from fence out, which hides content dynamically per viewer rather than altering the underlying document.

Q&A workflow: the structured process, built into most platforms, for a viewer to ask a question against a specific document, have it routed to a named internal owner, and receive a logged answer, as distinct from ad hoc email correspondence. Staging: uploading a document to a room in an unpublished state so it can be checked internally before any external viewer can see it.

Due diligence request list: the list of documents and disclosures a buyer or auditor asks to review, which a well built folder index should mirror directly so that reviewers can move between the two without translation, as covered in our due diligence checklist.

Model Context Protocol, MCP: an open standard for connecting an AI model or agent to external tools and data sources in a structured, permissioned way, covered in detail in our piece on giving AI agents access to a data room. AI legal drafter: a feature, offered by a small number of platforms including 99 Data Rooms, that uses an AI model to produce a first draft of a legal document or clause from within the room, intended to speed up a lawyer's first pass rather than to replace legal review.

Contract management: functionality that tracks a contract's lifecycle, key dates, renewal terms, obligations, beyond the point of signature, which some data room vendors now bundle into their platform so that documents shared during diligence can continue to be tracked after a deal completes rather than the room being closed and the documents archived.

For definitions applied directly to specific vendors, see the full ranking at /rankings, the scoring method at /methodology and current pricing at /pricing.