Enlarge / Twitter’s policies currently protect apparent rule-breaking posts due to a “world leader” clause. Tuesday saw the social media service try a different tack. (credit: Aurich Lawson / Getty Images)

Twitter’s newest fact-checking initiative, which slaps warnings on misleading posts by major public officials, appeared on arguably the biggest possible account in North America on Tuesday: President Donald Trump.

Earlier that day, Trump used Twitter to allege that mail-in voting is inherently “fraudulent.” Hours later, his posts were updated by Twitter to include a clickable, plain-text notice—”get the facts about mail-in ballots”—next to an exclamation-point icon.

Clicking that notice directs users to a page that cites “CNN, Washington Post and other fact checkers” in disputing the president’s Tuesday-morning allegation. But before the Twitter page links to these citations, it opens with what appears to be entirely original language, as opposed to a quote from a press outlet: