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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 in ISO-8859-1 and were therefore carried over into those positions in the Latin-1 range of Unicode. The rest were placed in a dedicated section of Unicode at U+2070 to U+209F. The two tables below show these characters.
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.
Do not use the Unicode subscripts and superscripts ² and ³, or XML/HTML character entity references (² etc.). Rather, write <sup>2</sup> and <sup>3</sup> to produce the superscripts 2 and 3. The superscripted 2 and 3 are easier to read, especially on small displays, and ensure that exponents are properly aligned. Compare:
Squaring is the same as raising to the power 2, and is denoted by a superscript 2; for instance, the square of 3 may be written as 3 2, which is the number 9. In some cases when superscripts are not available, as for instance in programming languages or plain text files, the notations x^2 or x**2 may be used in place of x 2.
2 Control-D has been used to signal "end of file" for text typed in at the terminal on Unix / Linux systems. Windows, DOS, and older minicomputers used Control-Z for this purpose. 3 Control-G is an artifact of the days when teletypes were in use. Important messages could be signalled by striking the bell on the teletype.
The International Phonetic Alphabet uses the superscript n ⁿ for nasal release, the superscript w ʷ to indicate labialized or labio-velarized consonants, the superscript h ʰ for aspirated consonants, the superscript j ʲ for palatalized consonants, the superscript gamma ᵞ for velarized consonants, the superscript turned h ᶣ for labio ...
Why anyone wants them I don't know when one can superscript or subscript anyway. Dmcq 12:16, 22 January 2009 (UTC) @Dmcq and M20-2.5: Sure you can superscript or subscript... if you've got HTML. Bunches of situations don't allow it, and even when they do, typing <sub>2</sub> and <sup>5</sup> can be a real PITA. I have a lot of friends on ...