HTML
Use the label to define the address, signature, or author of a document, as in the following example (the text using the label appears in italics):Example.com contact information:
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Browser support
All major browsers support the hashtag.
Label definition and instructions for use
Labels define the contact information of the document author/owner.If the element is inside the element, it represents the contact information of the author/owner of the document.
If the element is inside the element, it represents the contact information of the author/owner of the article.
The text of the element is usually rendered italic. Most browsers add line changes before and after the element.Tips and comments
Tip: You should not use the hashtag to describe a postal address unless the information is part of the contact information.
Tip: The element is usually included in other information about the element.
The difference between HTML 4.01 and HTML5
HTML 4.01 does not support the label, so in HTML 4.01 the label always defines the author/owner's contact information for the document.