Superscript
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A superscript is a number, figure, or symbol that appears above the normal line of type. Superscripts are often used, with various meanings, in formulas, mathematical expressions, or descriptions of chemical compounds. Superscripts can also be used to indicate the presence of a footnote in a document. Sometimes, ordinal endings for numbers are written as superscripts (1st, 2nd, 3rd rather than 1st, 2nd, 3rd).
In HTML, superscript text is produced by putting it inside the tags <sup> and </sup>.
In Unicode, there exist also special superscript characters, such as: ⁰¹²³⁴⁵⁶⁷⁸⁹⁺⁻⁼⁽⁾ⁿⁱ
See Also: subscript, font, typesetting, mathematical notation.