Some people do not want the text and prefer to use an extended character or HTML character entity to move the reader on to the full post.
有的人不想要文章，更喜欢使用一个延伸的字符，或者HTML字符实体来引导读者阅读整篇文章。
To display a less than sign (<) in HTML, we have to use a character entity.
要在HTML中显示（<）这个字符，我们就必须使用实体字符。
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