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Contact and corrections

A verified editorial mailbox is not currently available. This site has no contact form, chat service or telephone support.

Documenting a correction

Keep the article address, the exact statement at issue and a link to the original document, including its date and relevant section. This gives a future editorial review a reproducible basis for the change. The source list at the end of each article links to the material used.

For equipment support, use the manufacturer’s official support channel and the manual for your exact model. For questions about a permit or test requirement, contact the responsible authority or laboratory.

Read the source and illustration policy or return to the guides.