RailwayRailwayRailwayRailwayRailwayRailwayRailwayRailwayFind zero-width characters, Unicode tags, homoglyphs and unusual spaces in pasted text; copy a cleaned version.
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Invisible Unicode is one way text can be marked or made to break search; it is not proof that a specific AI wrote it, and its absence proves nothing either. Em dashes and smart quotes are a writing style, not a watermark.