The process behind each entry
- Primary sources first. Each entry is built from the authoritative source — the standard's official text, the issuing body's documentation, or a recognized reference — not from secondary blogs.
- Cross-checked. Key figures and formulas are verified against more than one independent source where possible.
- Structured for scanning. We lead with the table, formula or rule, flag the common mistakes, and keep prose minimal.
- Cited and dated. Every entry lists its sources and shows when it was last updated.
- Reviewed and corrected. Entries are revisited as standards change; reader corrections are incorporated quickly.
What we do — and don't — do
- We summarize and organize facts, standards and formulas; we do not reproduce copyrighted source text wholesale.
- We provide reference material, not personalized professional advice (legal, financial, medical or exam-outcome guarantees).
- We name the source so you can always go to the authority for the binding detail.
Found an error?
We take accuracy seriously. If something looks wrong, please tell us via contact with the entry and the correct source — we'll review and fix it. Corrections are logged so the same mistake doesn't recur.