https://www.theguardian.com/technology/2022/apr/06/twitter-working-on-edit-button-but-says-idea-did-not-come-from-elon-musk > Social media company says it has been working on edit button since 2021 and will be tested on people signed up for Twitter Blue > Twitter has confirmed it has working on an edit button, but denied the idea came after the company’s new largest shareholder, Elon Musk, held a poll on it.