Corrections Policy

Last updated September 15, 2026 Question about this page

A reference site that quietly edits its mistakes is not a reference site. Errors here are fixed promptly and the fix is recorded.

Reporting an error

Use the contact form or write to [email protected]. Give the page address, quote the passage, and say what is wrong with it. A source helps and is appreciated; a well-argued objection without one is still worth sending.

Reports are acknowledged and prioritized ahead of new work.

How each kind of error is handled

What it is What happens
Typographical or formatting Fixed without a note.
Clarification that does not change meaning Fixed, modification date updated.
Factual error in a figure, standard or requirement Fixed, with a dated correction note appended to the article stating what it said before and what it says now.
Error that changes the article’s conclusion Correction note at the top of the article, and the whole piece is re-checked against its full source set.
A standard or tariff has been revised Treated as an update rather than a correction: the affected passage and the modification date change, with no correction note.

What a correction note says

A correction note names the date, the passage, the previous wording and the current wording. It does not use vague phrasing to soften what happened. If a figure was wrong, the note says the figure was wrong.

What we will not do

  • Delete an article to make an error disappear.
  • Remove a correction note once it has been published.
  • Change accurate content because a company objects to being accurately described.
  • Treat a correction request differently depending on who sent it.

Right of reply

An organization described in an article may send a statement of its position. Where the statement is relevant and the identity is verified, it will be quoted or summarized in the article. That is separate from a correction and does not require us to agree with it.