A consolidated reference for F5 technical writers covering voice and tone, formatting, punctuation, procedures, terminology, and accessibility.
This guide consolidates F5's previously siloed style guides — Modern Voice, Brand, NGINX, and the F5 Technical Style Guide — into a single, authoritative reference. It is also configured as a knowledge base for the F5 Style GPT agent.
Each guideline lives in its own file, organized by category. See TOC.md for the full list of topics.
When this guide doesn't cover a topic, consult the fallback guides in this order:
- Microsoft Style Guide
- Chicago Manual of Style
- American Heritage Dictionary (spelling reference)
This guide follows American English spelling and conventions throughout. Use the American Heritage Dictionary as the spelling reference when in doubt.
Examples of American English preferences:
- organize, not organise
- color, not colour
- license (noun and verb), not licence
- canceled, not cancelled
Follow American date format conventions. See Dates and times for full guidance.
- Dates: June 17, 2026 (not 17 June 2026)
- Times: 10 a.m. PT (not 10AM or 10:00 AM)
- Availability: 24x7 (not 24/7)
See CONTRIBUTING.md for guidance on adding or updating guidelines. Use the template in templates/guideline-template.md for all new files.