OpenAI could watermark the text ChatGPT generates, but hasn't

…followed most of the kindly proffered links in hopes of gaining a vague understanding of how “watermark the text” is accomplished - and nothing but meta-features were mentioned. So… is it a file of text with the number of line ending white-spaces modulated into a watermark? or perhaps a ‘Morse’ sequence of one or two spaces following a period? or… it really isn’t just a plain text file at all, but there’s hidden meta data which wouldn’t work across all text editors? (“Nah, the watermark uses the word “■■■■■” which is otherwise universally obscured”)

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