Levels of Edit
Structured editing.


Levels of Edit

We edit systematically


Our structured approach to document services is based on the edit-level methodology developed by NASA and refined for half a century by editors worldwide.


Modular methodology

The Levels of Edit is a structured approach to editing that has been tested and refined by generations of editors. Developed at the NASA Jet Propulsion Laboratory shortly after the first moon landing, this flexible structure takes the guesswork out of project management, enabling authors to select exactly the type of edit that meets their specific needs.

Edit categories

The Levels of Edit defines nine categories of functions typically performed by editors, called edit types, which it configures into five cumulative edit levels.

The editorial process is analyzed, and five levels of edit are identified are identified. These levels represent cumulative combinations of nine types of edit: Coordination, Policy, Integrity, Screening, Copy Clarification, Format, Mechanical Style, Language, and Substantive. Each type of edit is set forth in terms of groups of actions to be performed by the editor.
— The Levels of Edit

For details, see Edit types and levels.

Service Modules

Based on The Levels of Edit, we offer five standard service modules (Proof, Language Edit, Style Edit, Usability Edit, and Substantive Edit) that can be configured for your particular project. In addition, we offer modular indexing services (Document Index, Master Index, Single-Source Index) and standardization services (Style Guide, Master Glossary).

For details, see Services.


Experienced editor

Kurt Ament is a former student of Mary Fran Buehler, co-author of The Levels of Edit.


Technical editor and indexer with over 20 years experience helping leaders in science and industry, such as European XFEL, Hewlett-Packard, and Symantec. Extensive experience developing style guides and master glossaries as well as implementing document management systems and publication databases.


Author of two popular books on technical communication: Single Sourcing: Building Modular Documentation and Indexing: A Nuts-and-Bolts Guide for Technical Writers.


Member of the Society for Technical Communication and the Gesellschaft für Technische Kommunikation.