Use of the <DFN> element is currently only supported by the Internet Explorer.

The <DFN> element can be used to mark the Defining Instance of a term. For example, the first time some text is mentioned in a paragraph.

Typically, it will render italicised.

The <DFN>Internet Explorer</DFN> is Microsoft's Web browser.

Would render as:

The Internet Explorer is Microsoft's Web browser.

NOTE : This element is Internet Explorer specific

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