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4 kinds of message that get a reply

• A listing on this site that misquotes what a product page actually says. Quote the line and name the listing; corrections of this kind are made quickly and without argument.
• A count that does not match the list beside it. That is a bug rather than an opinion, and it is treated as one.
• A published test method, standard or trade definition that this site has missed. A word currently filed as undefined that turns out to be defined somewhere would be a genuinely useful correction.
• A broken link, a photograph credited to the wrong person, or anything else that is simply wrong.