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is redundant when used in texting because the message is ended just by sending it. The possible change in meaning of the full stop has been quarreled by language experts for years.Professor David Crys- tal,one of the world's leading language experts,argues that the use of full stops is being changed greatly.He says that the full stop has become a "feeling marker"which shows that the sender is angry. In 2015,a study from Binghamton University in New York hired 126 high school students and the researchers found that text messages ending in a full stop like "lol."(Laugh out Loud. were considered less sincere.However,texts ending in an excla- mation point(感叹号)were considered good and sincere.