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Specifies that the enclosed text be displayed in superscript

HTML 3.2, 4, 4.01, 5

HTML Syntax

<sup
   class = classname
   id = value
   style = css properties
   title = text
   event = script
>

Superscripts in HTML appear slightly above the top edge of the preceding text and in a smaller font.

NOTE: Both start and end tags are required.

The <sup> element has no attribute of its own, but supports global attributes common to all HTML elements.

The following sample will render like this: X² + Y²

X<sup>2</sup> + Y<sup>2</sup>

SUB