Twitter explores 'undo send' feature for paying users

FILE PHOTO: The Twitter logo is displayed on a screen on the floor of the New York Stock Exchange (NYSE) in New York City, U.S., September 28, 2016. REUTERS/Brendan McDermid/File Photo

(Reuters) - Twitter Inc is testing an "undo send" function that would give users a short time to withdraw a tweet before it is posted, the company confirmed on Friday.

App researcher Jane Manchun Wong, who discovers unannounced social media features by looking at the sites' code, tweeted an animation showing a tweet with a spelling error where an 'undo' button was available before a short timer ran out.