浏览器不会特地对标题的文本进行格式化处理，它们将忽略在标题开始标签和结束标签之间一切除文本以外的内容。
Browsers do not specially format title text, and they ignore anything other than text inside the title start and end tags.
HTML引用（Citation）标签 （ ） 表示一个作品的引用。它必须包含引用作品的符合简写格式的标题或者URL。
It must include the title of a work or a URL reference, which may be in an abbreviated form according to the conventions used for the addition of citation metadata.
HTML引用（Citation）标签 （ ） 表示一个作品的引用。它必须包含引用作品的符合简写格式的标题或者URL。
It must include the title of a work or a URL reference, which may be in an abbreviated form according to the conventions used for the addition of citation metadata.
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