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Even IE6 supported this, apparently https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/contenteditable https://developer.mozilla.org/en-US/doc

Even IE6 supported this, apparently https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/contenteditable https://developer.mozilla.org/en-US/docs/Web/HTML/Global_att...