The web is full of cryptic status codes that your browser shows when it can’t connect to a website, such as 403 Forbidden or 404 Not Found. Now the Internet Engineering Steering Group is adding one more error code for your browser—but this time it will make it all too clear why you can’t see something.

The IESG recently approved status code 451 that tells visitors they can’t see the requested content due to “legal obstacles,” which usually means government censorship. Former Google engineer Tim Bray suggested code 451, inspired by Ray Bradbury’s dystopian novel Fahrenheit 451, back in 2012.

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