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Old 27th November 2010
backrow backrow is offline
Real Name: Anthony J. Bentley
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Default Using UTF‐8 [in OpenBSD]

Ever since OpenBSD introduced UTF‐8 support (in 4.8), I’ve been using lots of Unicode characters through X11’s compose feature. Press the compose key (in my case, right alt), follow it with a predefined sequence of characters, and presto!, a special character appears.

I use it for all kinds of things. All of my personal text files are in UTF‐8, and lots of web sites (including vBulletin/phpBB forums) support UTF‐8 with no trouble. So I can write the names of Hispanic friends with ñ or é, or my favorite classical composer Antonín Dvořák, or equations like ∫f(x) dx = ½x² + C.

Setting up UTF‐8
This assumes you’ll be working mostly in X. Most console fonts don’t have the space for Unicode, so although UTF‐8 will work correctly in programs, it probably won’t display properly in a non‐X environment.
  1. Environment variables in ~/.profile:
    • export LC_CTYPE=en_US.UTF-8
    • export GTK_IM_MODULE=xim # without this GTK apps will use their own compose key settings
    • export LESSCHARSET=utf-8 # not strictly necessary, but for when you view Unicode files in less
  2. Xterm settings in ~/.Xdefaults:
    • XTerm*locale: utf8
  3. X11 settings in ~/.xinitrc (or equivalent):
    • setxkbmap -option compose:ralt # the key here is configurable

Once you’ve done all of the above, restart X, open a terminal, and hit (in sequence) Alt ` a. If you get à, your compose key is working correctly!

The Compose file
By default, X11 uses its own compose file, which comes with a huge number of existing entries:
Code:
$ wc -l < /usr/X11R6/share/X11/locale/en_US.UTF-8/Compose
    4252
That includes a lot of duplicates and a lot of entries for keyboards that aren’t 104‐key. I also didn’t want to read through it to learn the shortcuts, so I made my own file. The file has to be saved at ~/.XCompose (note the case). Here are some combinations I use:
  • Alt $ _ for currency—£, ¥, ¢, ¤
  • Alt u _ for breve—ă, ĕ, ĭ, ŏ, ŭ
  • Alt v _ for caron—č, ď, ř
  • Alt , _ for cedilla—ç, ģ, ļ
  • Alt ^ _ for circumflex—â, ê, î, ô, û
  • Alt " _ for diaeresis—ä, ë, ï, ö, ü
  • Alt ~ _ for tilde—ñ, Ñ, Ã
  • Alt * _ for Greek letters—α, ω, Ω, π, τ
  • Repeating the character for an alternate—¡, ¿
  • Various math symbols: ×, ÷, ∞, ∗, ≪, ≫, ≠, ≈, ∥, ±
  • Arrows: ← → ↑ ↓
  • Pretty typography: dashes — – ‐, quotes “ ” ‘ ’, ellipses … ⋯ ⋰
  • Alt & _ for curly math letters—ℒ, ℱ, ℰ
A selection from my ~/.XCompose:
Code:
# see /usr/X11R6/include/X11/keysymdef.h for character escapes
# (^ → asciicircum, etc.)

<Multi_key> <space> <space> : "*" # 00A0 no-break space
<Multi_key> <exclam> <exclam> : "¡" # 00A1 inverted exclamation mark
<Multi_key> <dollar> <c> : "¢" # 00A2 cent sign
<Multi_key> <dollar> <l> : "£" # 00A3 pound sign
<Multi_key> <dollar> <x> : "¤" # 00A4 currency sign
<Multi_key> <dollar> <y> : "¥" # 00A5 yen sign
#<Multi_key> <bar> <bar> : "¦" # 00A6 broken vertical bar
<Multi_key> <o> <s> : "§" # 00A7 section sign
<Multi_key> <s> <o> : "§" # 00A7 section sign
<Multi_key> <quotedbl> <space> : "¨" # 00A8 spacing diaeresis
<Multi_key> <o> <c> : "©" # 00A9 copyright sign
<Multi_key> <c> <o> : "©" # 00A9 copyright sign
<Multi_key> <o> <r> : "®" # 00AE registered trade mark sign
<Multi_key> <r> <o> : "®" # 00AE registered trade mark sign
<Multi_key> <underscore> <space> : "¯" # 00AF spacing macron
<Multi_key> <o> <o> : "°" # 00B0 degree sign
<Multi_key> <plus> <minus> : "±" # 00B1 plus-or-minus sign
<Multi_key> <apostrophe> <space> : "´" # 00B4 spacing acute
<Multi_key> <p> <g> : "¶" # 00B6 paragraph sign
<Multi_key> <period> <period> : "·" # 00B7 middle dot
<Multi_key> <comma> <space> : "¸" # 00B8 spacing cedilla
<Multi_key> <asciicircum> <1> : "¹" # 00B9 superscript digit one
#<Multi_key> <s> <o> : "º" # 00BA masculine ordinal indicator
#<Multi_key> <greater> <greater> : "»" # 00BB right pointing guillemet
<Multi_key> <1> <4> : "¼" # 00BC fraction one quarter
<Multi_key> <1> <2> : "½" # 00BD fraction one half
<Multi_key> <3> <4> : "¾" # 00BE fraction three quarters
<Multi_key> <question> <question> : "¿" # 00BF inverted question mark
<Multi_key> <grave> <A> : "À" # 00C0 latin capital letter a grave
<Multi_key> <apostrophe> <A> : "Á" # 00C1 latin capital letter a acute
<Multi_key> <asciicircum> <A> : "Â" # 00C2 latin capital letter a circumflex
<Multi_key> <asciitilde> <A> : "Ã" # 00C3 latin capital letter a tilde
<Multi_key> <quotedbl> <A> : "Ä" # 00C4 latin capital letter a diaeresis
<Multi_key> <o> <A> : "Å" # 00C5 latin capital letter a ring
<Multi_key> <A> <E> : "Æ" # 00C6 latin capital letter a e
<Multi_key> <comma> <C> : "Ç" # 00C7 latin capital letter c cedilla
<Multi_key> <grave> <E> : "È" # 00C8 latin capital letter e grave
<Multi_key> <apostrophe> <E> : "É" # 00C9 latin capital letter e acute
<Multi_key> <asciicircum> <E> : "Ê" # 00CA latin capital letter e circumflex
<Multi_key> <quotedbl> <E> : "Ë" # 00CB latin capital letter e diaeresis
<Multi_key> <grave> <I> : "Ì" # 00CC latin capital letter i grave
<Multi_key> <apostrophe> <I> : "Í" # 00CD latin capital letter i acute
<Multi_key> <asciicircum> <I> : "Î" # 00CE latin capital letter i circumflex
<Multi_key> <quotedbl> <I> : "Ï" # 00CF latin capital letter i diaeresis
<Multi_key> <D> <minus> : "Ð" # 00D0 latin capital letter eth
<Multi_key> <minus> <D> : "Ð" # 00D0 latin capital letter eth
<Multi_key> <asciitilde> <N> : "Ñ" # 00D1 latin capital letter n tilde
<Multi_key> <grave> <O> : "Ò" # 00D2 latin capital letter o grave
<Multi_key> <apostrophe> <O> : "Ó" # 00D3 latin capital letter o acute
<Multi_key> <asciicircum> <O> : "Ô" # 00D4 latin capital letter o circumflex
<Multi_key> <asciitilde> <O> : "Õ" # 00D5 latin capital letter o tilde
<Multi_key> <quotedbl> <O> : "Ö" # 00D6 latin capital letter o diaeresis
<Multi_key> <x> <x> : "×" # 00D7 multiplication sign
<Multi_key> <slash> <O> : "Ø" # 00D8 latin capital letter o with stroke
<Multi_key> <grave> <U> : "Ù" # 00D9 latin capital letter u grave
<Multi_key> <apostrophe> <U> : "Ú" # 00DA latin capital letter u acute
<Multi_key> <asciicircum> <U> : "Û" # 00DB latin capital letter u circumflex
<Multi_key> <quotedbl> <U> : "Ü" # 00DC latin capital letter u diaeresis
<Multi_key> <apostrophe> <Y> : "Ý" # 00DD latin capital letter y acute
<Multi_key> <bar> <P> : "Þ" # 00DE latin capital letter thorn
<Multi_key> <s> <s> : "ß" # 00DF latin small letter eszett
<Multi_key> <grave> <a> : "à" # 00E0 latin small letter a grave
<Multi_key> <apostrophe> <a> : "á" # 00E1 latin small letter a acute
<Multi_key> <asciicircum> <a> : "â" # 00E2 latin small letter a circumflex
<Multi_key> <asciitilde> <a> : "ã" # 00E3 latin small letter a tilde
<Multi_key> <quotedbl> <a> : "ä" # 00E4 latin small letter a diaeresis
<Multi_key> <o> <a> : "å" # 00E5 latin small letter a ring
<Multi_key> <a> <e> : "æ" # 00E6 latin small letter a e
<Multi_key> <comma> <c> : "ç" # 00E7 latin small letter c cedilla
<Multi_key> <grave> <e> : "è" # 00E8 latin small letter e grave
<Multi_key> <apostrophe> <e> : "é" # 00E9 latin small letter e acute
<Multi_key> <asciicircum> <e> : "ê" # 00EA latin small letter e circumflex
<Multi_key> <quotedbl> <e> : "ë" # 00EB latin small letter e diaeresis
<Multi_key> <grave> <i> : "ì" # 00EC latin small letter i grave
<Multi_key> <apostrophe> <i> : "í" # 00ED latin small letter i acute
<Multi_key> <asciicircum> <i> : "î" # 00EE latin small letter i circumflex
<Multi_key> <quotedbl> <i> : "ï" # 00EF latin small letter i diaeresis
<Multi_key> <minus> <d> : "ð" # 00F0 latin small letter eth
<Multi_key> <d> <minus> : "ð" # 00F0 latin small letter eth
<Multi_key> <asciitilde> <n> : "ñ" # 00F1 latin small letter n tilde
<Multi_key> <grave> <o> : "ò" # 00F2 latin small letter o grave
<Multi_key> <apostrophe> <o> : "ó" # 00F3 latin small letter o acute
<Multi_key> <asciicircum> <o> : "ô" # 00F4 latin small letter o circumflex
<Multi_key> <asciitilde> <o> : "õ" # 00F5 latin small letter o tilde
<Multi_key> <quotedbl> <o> : "ö" # 00F6 latin small letter o diaeresis
<Multi_key> <colon> <minus> : "÷" # 00F7 division sign
<Multi_key> <minus> <colon> : "÷" # 00F7 division sign
<Multi_key> <slash> <o> : "ø" # 00F8 latin small letter o with stroke
<Multi_key> <grave> <u> : "ù" # 00F9 latin small letter u grave
<Multi_key> <apostrophe> <u> : "ú" # 00FA latin small letter u acute
<Multi_key> <asciicircum> <u> : "û" # 00FB latin small letter u circumflex
<Multi_key> <quotedbl> <u> : "ü" # 00FC latin small letter u diaeresis
<Multi_key> <apostrophe> <y> : "ý" # 00FD latin small letter y acute
<Multi_key> <t> <h> : "þ" # 00FE latin small letter thorn
<Multi_key> <quotedbl> <y> : "ÿ" # 00FF latin small letter y diaeresis
<Multi_key> <underscore> <A> : "Ā" # 0100 latin capital letter a with macron
<Multi_key> <underscore> <a> : "ā" # 0101 latin small letter a with macron
<Multi_key> <u> <A> : "Ă" # 0102 latin capital letter a with breve
<Multi_key> <u> <a> : "ă" # 0103 latin small letter a with breve
<Multi_key> <semicolon> <A> : "Ą" # 0104 latin capital letter a with ogonek
<Multi_key> <semicolon> <a> : "ą" # 0105 latin small letter a with ogonek
<Multi_key> <apostrophe> <C> : "Ć" # 0106 latin capital letter c with acute
<Multi_key> <apostrophe> <c> : "ć" # 0107 latin small letter c with acute
<Multi_key> <asciicircum> <C> : "Ĉ" # 0108 latin capital letter c with circumflex
<Multi_key> <asciicircum> <c> : "ĉ" # 0109 latin small letter c with circumflex
<Multi_key> <period> <C> : "Ċ" # 010A latin capital letter c with dot above
<Multi_key> <period> <c> : "ċ" # 010B latin small letter c with dot above
<Multi_key> <v> <C> : "Č" # 010C latin capital letter c with caron
<Multi_key> <v> <c> : "č" # 010D latin small letter c with caron
<Multi_key> <v> <D> : "Ď" # 010E latin capital letter d with caron
<Multi_key> <v> <d> : "ď" # 010F latin small letter d with caron
<Multi_key> <slash> <D> : "Đ" # 0110 latin capital letter d with stroke
<Multi_key> <slash> <d> : "đ" # 0111 latin small letter d with stroke
<Multi_key> <underscore> <E> : "Ē" # 0112 latin capital letter e with macron
<Multi_key> <underscore> <e> : "ē" # 0113 latin small letter e with macron
<Multi_key> <u> <E> : "Ĕ" # 0114 latin capital letter e with breve
<Multi_key> <u> <e> : "ĕ" # 0115 latin small letter e with breve
<Multi_key> <period> <E> : "Ė" # 0116 latin capital letter e with dot above
<Multi_key> <period> <e> : "ė" # 0117 latin small letter e with dot above
<Multi_key> <semicolon> <E> : "Ę" # 0118 latin capital letter e with ogonek
<Multi_key> <semicolon> <e> : "ę" # 0119 latin small letter e with ogonek
<Multi_key> <v> <E> : "Ě" # 011A latin capital letter e with caron
<Multi_key> <v> <e> : "ě" # 011B latin small letter e with caron
<Multi_key> <asciicircum> <G> : "Ĝ" # 011C latin capital letter g with circumflex
<Multi_key> <asciicircum> <g> : "ĝ" # 011D latin small letter g with circumflex
<Multi_key> <u> <G> : "Ğ" # 011E latin capital letter g with breve
<Multi_key> <u> <g> : "ğ" # 011F latin small letter g with breve
<Multi_key> <period> <G> : "Ġ" # 0120 latin capital letter g with dot above
<Multi_key> <period> <g> : "ġ" # 0121 latin small letter g with dot above
<Multi_key> <comma> <G> : "Ģ" # 0122 latin capital letter g with cedilla
<Multi_key> <comma> <g> : "ģ" # 0123 latin small letter g with cedilla
<Multi_key> <asciicircum> <H> : "Ĥ" # 0124 latin capital letter h with circumflex
<Multi_key> <asciicircum> <h> : "ĥ" # 0125 latin small letter h with circumflex
<Multi_key> <slash> <H> : "Ħ" # 0126 latin capital letter h with stroke
<Multi_key> <slash> <h> : "ħ" # 0127 latin small letter h with stroke
<Multi_key> <asciitilde> <I> : "Ĩ" # 0128 latin capital letter i with tilde
<Multi_key> <asciitilde> <i> : "ĩ" # 0129 latin small letter i with tilde
<Multi_key> <underscore> <I> : "Ī" # 012A latin capital letter i with macron
<Multi_key> <underscore> <i> : "ī" # 012B latin small letter i with macron
<Multi_key> <u> <I> : "Ĭ" # 012C latin capital letter i with breve
<Multi_key> <u> <i> : "ĭ" # 012D latin small letter i with breve
<Multi_key> <semicolon> <I> : "Į" # 012E latin capital letter i with ogonek
<Multi_key> <semicolon> <i> : "į" # 012F latin small letter i with ogonek
<Multi_key> <period> <I> : "İ" # 0130 latin capital letter i with dot above
<Multi_key> <i> <i> : "ı" # 0131 latin small letter dotless i
<Multi_key> <I> <J> : "IJ" # 0132 latin capital ligature ij
<Multi_key> <i> <j> : "ij" # 0133 latin small ligature ij
<Multi_key> <asciicircum> <J> : "Ĵ" # 0134 latin capital letter j with circumflex
<Multi_key> <asciicircum> <j> : "ĵ" # 0135 latin small letter j with circumflex
<Multi_key> <comma> <K> : "Ķ" # 0136 latin capital letter k with cedilla
<Multi_key> <comma> <k> : "ķ" # 0137 latin small letter k with cedilla
# 0138 latin small letter kra
<Multi_key> <apostrophe> <L> : "Ĺ" # 0139 latin capital letter l with acute
<Multi_key> <apostrophe> <l> : "ĺ" # 013A latin small letter l with acute
<Multi_key> <comma> <L> : "Ļ" # 013B latin capital letter l with cedilla
<Multi_key> <comma> <l> : "ļ" # 013C latin small letter l with cedilla
<Multi_key> <v> <L> : "Ľ" # 013D latin capital letter l with caron
<Multi_key> <v> <l> : "ľ" # 013E latin small letter l with caron
<Multi_key> <period> <L> : "Ŀ" # 013F latin capital letter l with middle dot
<Multi_key> <period> <l> : "ŀ" # 0140 latin small letter l with middle dot
<Multi_key> <slash> <L> : "Ł" # 0141 latin capital letter l with stroke
<Multi_key> <slash> <l> : "ł" # 0142 latin small letter l with stroke
<Multi_key> <apostrophe> <N> : "Ń" # 0143 latin capital letter n with acute
<Multi_key> <apostrophe> <n> : "ń" # 0144 latin small letter n with acute
<Multi_key> <comma> <N> : "Ņ" # 0145 latin capital letter n with cedilla
<Multi_key> <comma> <n> : "ņ" # 0146 latin small letter n with cedilla
<Multi_key> <v> <N> : "Ň" # 0147 latin capital letter n with caron
<Multi_key> <v> <n> : "ň" # 0148 latin small letter n with caron
# 0149 is deprecated
# 014A latin capital letter eng
# 014B latin small letter eng
<Multi_key> <underscore> <O> : "Ō" # 014C latin capital letter o with macron
<Multi_key> <underscore> <o> : "ō" # 014D latin small letter o with macron
<Multi_key> <u> <O> : "Ŏ" # 014E latin capital letter o with breve
<Multi_key> <u> <o> : "ŏ" # 014F latin small letter o with breve
<Multi_key> <apostrophe> <Multi_key> <apostrophe> <O> : "Ő" # 0150 latin capital letter o with double acute
<Multi_key> <apostrophe> <Multi_key> <apostrophe> <o> : "ő" # 0151 latin small letter o with double acute
<Multi_key> <O> <E> : "Œ" # 0152 latin capital ligature oe
<Multi_key> <o> <e> : "œ" # 0153 latin small ligature oe
<Multi_key> <apostrophe> <R> : "Ŕ" # 0154 latin capital letter r with acute
<Multi_key> <apostrophe> <r> : "ŕ" # 0155 latin small letter r with acute
<Multi_key> <comma> <R> : "Ŗ" # 0156 latin capital letter r with cedilla
<Multi_key> <comma> <r> : "ŗ" # 0157 latin small letter r with cedilla
<Multi_key> <v> <R> : "Ř" # 0158 latin capital letter r with caron
<Multi_key> <v> <r> : "ř" # 0159 latin small letter r with caron
<Multi_key> <apostrophe> <S> : "Ś" # 015A latin capital letter s with acute
<Multi_key> <apostrophe> <s> : "ś" # 015B latin small letter s with acute
<Multi_key> <asciicircum> <S> : "Ŝ" # 015C latin capital letter s with circumflex
<Multi_key> <asciicircum> <s> : "ŝ" # 015D latin small letter s with circumflex
<Multi_key> <comma> <S> : "Ş" # 015E latin capital letter s with cedilla
<Multi_key> <comma> <s> : "ş" # 015F latin small letter s with cedilla
<Multi_key> <v> <S> : "Š" # 0160 latin capital letter s with caron
<Multi_key> <v> <s> : "š" # 0161 latin small letter s with caron
<Multi_key> <comma> <T> : "Ţ" # 0162 latin capital letter t with cedilla
<Multi_key> <comma> <t> : "ţ" # 0163 latin small letter t with cedilla
<Multi_key> <v> <T> : "Ť" # 0164 latin capital letter t with caron
<Multi_key> <v> <t> : "ť" # 0165 latin small letter t with caron
<Multi_key> <slash> <T> : "Ŧ" # 0166 latin capital letter t with stroke
<Multi_key> <slash> <t> : "ŧ" # 0167 latin small letter t with stroke
<Multi_key> <asciitilde> <U> : "Ũ" # 0168 latin capital letter u with tilde
<Multi_key> <asciitilde> <u> : "ũ" # 0169 latin small letter u with tilde
<Multi_key> <underscore> <U> : "Ū" # 016A latin capital letter u with macron
<Multi_key> <underscore> <u> : "ū" # 016B latin small letter u with macron
<Multi_key> <u> <U> : "Ŭ" # 016C latin capital letter u with breve
<Multi_key> <u> <u> : "ŭ" # 016D latin small letter u with breve
<Multi_key> <o> <U> : "Ů" # 016E latin capital letter u with ring above
<Multi_key> <o> <u> : "ů" # 016F latin small letter u with ring above
<Multi_key> <apostrophe> <Multi_key> <apostrophe> <U> : "Ű" # 0170 latin capital letter u with double acute
<Multi_key> <apostrophe> <Multi_key> <apostrophe> <u> : "ű" # 0171 latin small letter u with double acute
<Multi_key> <semicolon> <U> : "Ų" # 0172 latin capital letter u with ogonek
<Multi_key> <semicolon> <u> : "ų" # 0173 latin small letter u with ogonek
<Multi_key> <asciicircum> <W> : "Ŵ" # 0174 latin capital letter w with circumflex
<Multi_key> <asciicircum> <w> : "ŵ" # 0175 latin small letter w with circumflex
<Multi_key> <asciicircum> <Y> : "Ŷ" # 0176 latin capital letter y with circumflex
<Multi_key> <asciicircum> <y> : "ŷ" # 0177 latin small letter y with circumflex
<Multi_key> <quotedbl> <Y> : "Ÿ" # 0178 latin capital letter y with diaeresis
<Multi_key> <apostrophe> <Z> : "Ź" # 0179 latin capital letter z with acute
<Multi_key> <apostrophe> <z> : "ź" # 017A latin small letter z with acute
<Multi_key> <period> <Z> : "Ż" # 017B latin capital letter z with dot above
<Multi_key> <period> <z> : "ż" # 017C latin small letter z with dot above
<Multi_key> <v> <Z> : "Ž" # 017D latin capital letter z with caron
<Multi_key> <v> <z> : "ž" # 017E latin small letter z with caron
<Multi_key> <f> <f> : "ſ" # 017F latin small letter long s


<Multi_key> <o> <space> : "˚" # 02DA spacing ring above

<Multi_key> <apostrophe> <Multi_key> <apostrophe> <space> : "˝" # 02DD spacing double acute

<Multi_key> <asterisk> <A> : "Α" # 0391 capital alpha
<Multi_key> <asterisk> <B> : "Β" # 0392 capital beta
<Multi_key> <asterisk> <G> : "Γ" # 0393 capital gamma
<Multi_key> <asterisk> <D> : "Δ" # 0394 capital delta
<Multi_key> <asterisk> <E> : "Ε" # 0395 capital epsilon
<Multi_key> <asterisk> <Z> : "Ζ" # 0396 capital zeta
<Multi_key> <asterisk> <H> : "Η" # 0397 capital eta
<Multi_key> <asterisk> <U> : "Θ" # 0398 capital theta
<Multi_key> <asterisk> <I> : "Ι" # 0399 capital iota
<Multi_key> <asterisk> <K> : "Κ" # 039A capital kappa
<Multi_key> <asterisk> <L> : "Λ" # 039B capital lambda
<Multi_key> <asterisk> <M> : "Μ" # 039C capital mu
<Multi_key> <asterisk> <N> : "Ν" # 039D capital nu
<Multi_key> <asterisk> <J> : "Ξ" # 039E capital xi
<Multi_key> <asterisk> <O> : "Ο" # 039F capital omicron
<Multi_key> <asterisk> <P> : "Π" # 03A0 capital pi
<Multi_key> <asterisk> <R> : "Ρ" # 03A1 capital rho
# final sigma would go here
<Multi_key> <asterisk> <S> : "Σ" # 03A3 capital sigma
<Multi_key> <asterisk> <T> : "Τ" # 03A4 capital tau
<Multi_key> <asterisk> <Y> : "Υ" # 03A5 capital upsilon
<Multi_key> <asterisk> <F> : "Φ" # 03A6 capital phi
<Multi_key> <asterisk> <X> : "Χ" # 03A7 capital chi
<Multi_key> <asterisk> <C> : "Ψ" # 03A8 capital psi
<Multi_key> <asterisk> <V> : "Ω" # 03A9 capital omega
# see also 2127

<Multi_key> <asterisk> <a> : "α" # 03B1 small alpha
<Multi_key> <asterisk> <b> : "β" # 03B2 small beta
<Multi_key> <asterisk> <g> : "γ" # 03B3 small gamma
<Multi_key> <asterisk> <d> : "δ" # 03B4 small delta
<Multi_key> <asterisk> <e> : "ε" # 03B5 small epsilon
<Multi_key> <asterisk> <z> : "ζ" # 03B6 small zeta
<Multi_key> <asterisk> <h> : "η" # 03B7 small eta
<Multi_key> <asterisk> <u> : "θ" # 03B8 small theta
<Multi_key> <asterisk> <i> : "ι" # 03B9 small iota
<Multi_key> <asterisk> <k> : "κ" # 03BA small kappa
<Multi_key> <asterisk> <l> : "λ" # 03BB small lambda
<Multi_key> <asterisk> <m> : "μ" # 03BC small mu
<Multi_key> <asterisk> <n> : "ν" # 03BD small nu
<Multi_key> <asterisk> <j> : "ξ" # 03BE small xi
<Multi_key> <asterisk> <o> : "ο" # 03BF small omicron
<Multi_key> <asterisk> <p> : "π" # 03C0 small pi
<Multi_key> <asterisk> <r> : "ρ" # 03C1 small rho
<Multi_key> <asterisk> <q> : "ς" # 03C2 small final sigma
<Multi_key> <asterisk> <s> : "σ" # 03C3 small sigma
<Multi_key> <asterisk> <t> : "τ" # 03C4 small tau
<Multi_key> <asterisk> <y> : "υ" # 03C5 small upsilon
<Multi_key> <asterisk> <f> : "φ" # 03C6 small phi
<Multi_key> <asterisk> <x> : "χ" # 03C7 small chi
<Multi_key> <asterisk> <c> : "ψ" # 03C8 small psi
<Multi_key> <asterisk> <v> : "ω" # 03C9 small omega

<Multi_key> <h> <y> : "‐" # 2010 hyphen
<Multi_key> <exclam> <minus> : "‑" # 2011 non-breaking hyphen
<Multi_key> <f> <i> : "‒" # 2012 figure dash
<Multi_key> <e> <n> : "–" # 2013 en dash
<Multi_key> <e> <m> : "—" # 2014 em dash

<Multi_key> <less> <apostrophe> : "‘" # 2018 left single quotation mark
<Multi_key> <greater> <apostrophe> : "’" # 2019 right single quotation mark

<Multi_key> <less> <quotedbl> : "“" # 201C left double quotation mark
<Multi_key> <greater> <quotedbl> : "”" # 201D right double quotation mark

<Multi_key> <period> <underscore> : "…" # 2026 horizontal ellipsis

<Multi_key> <1> <apostrophe> : "′" # 2032 prime
<Multi_key> <2> <apostrophe> : "″" # 2033 double prime
<Multi_key> <3> <apostrophe> : "‴" # 2034 triple prime

<Multi_key> <underscore> <underscore> : "‾" # 203E overline

<Multi_key> <slash> <slash> : "⁄" # 2044 fraction slash

<Multi_key> <dollar> <e> : "€" # 20AC euro sign

<Multi_key> <dollar> <r> : "₹" # 20B9 indian rupee sign

<Multi_key> <minus> <h> : "ℏ" # 210F planck constant over two pi

<Multi_key> <ampersand> <L> : "ℒ" # 2112 script capital l

<Multi_key> <R> <x> : "℞" # 211E prescription take

<Multi_key> <t> <m> : "™" # 2122 trademark

<Multi_key> <asterisk> <W> : "℧" # 2127 inverted ohm sign

<Multi_key> <ampersand> <E> : "ℰ" # 2130 script capital e
<Multi_key> <ampersand> <F> : "ℱ" # 2131 script capital f

<Multi_key> <less> <minus> : "←" # 2190 leftwards arrow
<Multi_key> <bar> <asciicircum> : "↑" # 2191 upwards arrow
<Multi_key> <minus> <greater> : "→" # 2192 rightwards arrow
<Multi_key> <bar> <v> : "↓" # 2193 downwards arrow
<Multi_key> <bar> <V> : "↓" # 2193 downwards arrow

<Multi_key> <v> <less> : "↵" # 21B5 downwards arrow with corner leftwards

<Multi_key> <P> <P> : "∏" # 220F n-ary product
<Multi_key> <S> <S> : "∑" # 2211 n-ary summation
<Multi_key> <minus> <minus> : "−" # 2212 minus sign
<Multi_key> <minus> <plus> : "∓" # 2213 minus-or-plus sign

<Multi_key> <asterisk> <asterisk> : "∗" # 2217 asterisk operator

<Multi_key> <s> <q> : "√" # 221A square root
<Multi_key> <c> <u> : "∛" # 221B cube root
<Multi_key> <f> <o> : "∜" # 221C fourth root
<Multi_key> <p> <r> : "∝" # 221D proportional to
<Multi_key> <8> <8> : "∞" # 221E infinity
<Multi_key> <bar> <underscore> : "∟" # 221F right angle
<Multi_key> <a> <n> : "∠" # 2220 angle

<Multi_key> <bar> <bar> : "∥" # 2225 parallel to

<Multi_key> <1> <plus> : "∫" # 222B integral
<Multi_key> <2> <plus> : "∬" # 222C double integral
<Multi_key> <3> <plus> : "∭" # 222D triple integral
<Multi_key> <c> <plus> : "∮" # 222E contour integral
<Multi_key> <s> <plus> : "∯" # 222F surface integral
<Multi_key> <v> <plus> : "∰" # 2230 volume integral

<Multi_key> <colon> <colon> : "∷" # 2237 proportion

<Multi_key> <asciitilde> <equal> : "≅" # 2245 approximately equal to

<Multi_key> <asciitilde> <asciitilde> : "≈" # 2248 almost equal to

<Multi_key> <slash> <equal> : "≠" # 2260 not equal to
<Multi_key> <equal> <equal> : "≡" # 2261 identical to

<Multi_key> <less> <equal> : "≤" # 2264 less-than or equal to
<Multi_key> <greater> <equal> : "≥" # 2265 greater-than or equal to

<Multi_key> <less> <less> : "≪" # 226A much less than
<Multi_key> <greater> <greater> : "≫" # 226B much greater than

#<Multi_key> <underscore> <s> : "⊂" # 2282 subset of
#<Multi_key> <asciicircum> <s> : "⊃" # 2283 superset of

<Multi_key> <period> <bar> : "⋮" # 22EE vertical ellipsis
<Multi_key> <period> <minus> : "⋯" # 22EF midline horizontal ellipsis
<Multi_key> <period> <slash> : "⋰" # 22F0 up right diagonal ellipsis
<Multi_key> <period> <backslash> : "⋱" # 22F1 down right diagonal ellipsis

<Multi_key> <c> <m> : "⌘" # 2318 command key

<Multi_key> <o> <p> : "⌥" # 2325 option key

<Multi_key> <s> <t> : "★" # 2605 black star
<Multi_key> <S> <T> : "☆" # 2606 white star

<Multi_key> <p> <h> : "☎" # 260E black telephone

<Multi_key> <colon> <parenleft> : "☹" # 2639 sad face
<Multi_key> <colon> <parenright> : "☺" # 263A smiley face

<Multi_key> <f> <e> : "♀" # 2640 sign of venus
<Multi_key> <m> <a> : "♂" # 2642 sign of mars

<Multi_key> <s> <p> : "♠" # 2660 spade suit
<Multi_key> <c> <l> : "♣" # 2663 club suit
<Multi_key> <less> <3> : "♥" # 2665 heart suit
<Multi_key> <d> <i> : "♦" # 2666 diamond suit

<Multi_key> <3> <r> : "♺" # 267A recycling symbol

<Multi_key> <at> <at> : "⚛" # 269B atom symbol

<Multi_key> <x> <n> : "⨉" # 2A09 n-ary times operator

<Multi_key> <4> <plus> : "⨌" # 2A0C quadruple integral operator

<Multi_key> <x> <c> : "⨯" # 2A2F vector or cross product

<Multi_key> <F> <D> : "�" # FFFD replacement character
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Old 28th November 2010
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Carpetsmoker Carpetsmoker is offline
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Looking into this has been on my TODO list for ages, this is a good simple overview. Thanks.
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