Report an issue

Use the contact details and include the page address, the statement or result, and a supporting source when possible. The prelaunch preview does not yet accept submissions.

How an issue is checked

  1. Identify the claim, source convention, or calculation involved.
  2. Compare the published guidance with the cited source and reproduce a reported tool error.
  3. Correct a confirmed error in the shared data or affected page, then check related pages and results.
  4. For a material change after publication, add a dated note explaining what changed and why.

A source-check date means the references were reviewed. It is not a kitchen-test date. Cosmetic edits do not count as new testing or a substantial content update.

Current status

No public correction history exists yet because the site has not launched. Prelaunch edits are tracked in the project’s review records.