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Example of subscript and superscript. In each example the first "2" is professionally designed, and is included as part of the glyph set; the second "2" is a manual approximation using a small version of the standard "2". The visual weight of the first "2" matches the other characters better.
The most common superscript digits (1, 2, and 3) were included in ISO-8859-1 and were therefore carried over into those code points in the Latin-1 range of Unicode. The remainder were placed along with basic arithmetical symbols, and later some Latin subscripts, in a dedicated block at U+2070 to U+209F.
Superscripts and Subscripts is a Unicode block containing superscript and subscript numerals, mathematical operators, and letters used in mathematics and phonetics. The use of subscripts and superscripts in Unicode allows any polynomial, chemical and certain other equations to be represented in plain text without using any form of markup like HTML or TeX.
Exponentiation is indicated using a superscript: 2 2 = 4 using 2{{sup|2}} = 4. Special care is needed with subscripted labels to distinguish the purpose of the subscript (as this is a common error): variables and constants in subscripts should be italic, while textual labels should be in normal text font (Roman, upright). For example:
Superscript two: 0114 U+00B3 ³ 179 0302 0263 ³ Superscript three: 0115 U+00B4 ´ 180 0302 0264 ´ Acute accent: 0116 U+00B5 µ 181 0302 0265 µ Micro sign: 0117 U+00B6 ¶ 182 0302 0266 ¶ Pilcrow sign 0118 U+00B7 · 183 0302 0267 · Middle dot: 0119 U+00B8 ¸ 184 0302 0270 ¸ Cedilla: 0120 U+00B9 ¹ 185 0302 0271 ...
For singular ordinal numbers, shortened forms use the feminine (ª) and masculine (º) ordinal indicators, [6] rather than the superscript a and o, except in ordinal numbers ending in -er (only before masculine singular sustantives for ordinal numbers whose cardinal equivalent finishes in 1 and 3, except with the 11.º variant spelled undécimo).
A few phoneticians use superscript letters for offglides and subscript letters for simultaneous articulation (e.g. tʲ vs tⱼ ). There is a longstanding tradition in the IPA that one may turn any IPA letter into a superscript, and in so doing impart its features to the base consonant.
The Unicode Consortium and the ISO/IEC JTC 1/SC 2/WG 2 jointly collaborate on the list of the characters in the Universal Coded Character Set.The Universal Coded Character Set, most commonly called the Universal Character Set (abbr. UCS, official designation: ISO/IEC 10646), is an international standard to map characters, discrete symbols used in natural language, mathematics, music, and other ...