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The intended use [2] when these characters were added to Unicode was to produce true superscripts and subscripts so that chemical and algebraic formulas could be written without markup. Thus "H₂O" (using a subscript 2 character) is supposed to be identical to "H 2 O" (with subscript markup).
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.
For instance, the combination Alt+ 1 6 3 would result in ú (Latin letter u with acute accent) which is at 163 in the OEM code page of CP437 or CP850. [2] This did not work for characters not in the Windows Code Page (such as box-drawing characters).
To use alt key codes for keyboard shortcut symbols you’ll need to have this enabled. If you’re using a laptop, your number pad is probably integrated to save space. No problem! Just hit the Fn ...
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".
SUBSCRIPT PLUS SIGN ... 2. ^ Unicode code points U+2329 and U+232A are deprecated as of Unicode version 5.2: Geometric Shapes block The Geometric Shapes block (U+25A0 ...
This page lists codes for keyboard characters, the computer code values for common characters, such as the Unicode or HTML entity codes (see below: Table of HTML values"). There are also key chord combinations, such as keying an en dash ('–') by holding ALT+0150 on the numeric keypad of MS Windows computers.
As of Unicode version 16.0, there are 155,063 characters with code points, covering 168 modern and historical scripts, as well as multiple symbol sets.This article includes the 1,062 characters in the Multilingual European Character Set 2 subset, and some additional related characters.