Methodology
How the reference keeps specialist evidence rules intact.
Shared publishing principles
Every guide must have a distinct user need, adequate factual support and enough context to be useful. Search demand may prioritize research but never serves as factual evidence.
Specialist evidence boundaries
Phrase-origin claims remain fail-closed when history is uncertain. Usage pages distinguish rules from regional and stylistic variation. Writing pages distinguish grammar from house style and etiquette preference.
Related-guide policy
Cross-section links are reviewed for genuine relevance. Simple word overlap does not create a related-guide link.
Search wording
Different ways of asking the same question may point to the same reviewed guide when the intent is clear. This improves discovery without creating repetitive pages or weakening evidence requirements.