On page 2 of “Uh, Tuba, About bandwidth stealing.”, manhattan said
As explained in that thread, though HTML is currently disallowed in posts, you can still use codes to make special characters in your post. For example, I can include a copyright symbol by typing in © which will show up as ©. Below is a list of the “special” characters that are not immediately obvious from the keyboard. Some have “name codes”, and some don’t, so I separated those in the list to make it more readable.
For a complete list of characters, see Webmonkey Reference: Special Characters
Some of these characters may not be displayed properly depending on your web browser (i.e. which web browser or what version of the browser.)
Named special characters:
Name Code Numeric Code Character Description
& & { & } ampersand
< < { < } less-than sign
> > { > } greater-than sign
{ } nonbreaking space
© © { © } copyright
® ® { ® } registered trademark
À À { À } uppercase A, grave accent
Á Á { Á }& uppercase A, acute accen
  {  } uppercase A, circumflex accent
à à { à } uppercase A, tilde
Ä Ä { Ä } uppercase A, umlaut
Å Å { Å } uppercase A, ring
Æ Æ { Æ } uppercase AE
Ç Ç { Ç } uppercase C, cedilla
È È { È } uppercase E, grave accent
É É { É } uppercase E, acute accent
Ê Ê { Ê } uppercase E, circumflex accent
Ë Ë { Ë } uppercase E, umlaut
Ì Ì { Ì } uppercase I, grave accent
Í Í { Í } uppercase I, acute accent
Î Î { Î } uppercase I, circumflex accent
Ï Ï { Ï } uppercase I, umlaut
Ð Ð { Ð } uppercase Eth, Icelandic
Ñ Ñ {{ Ñ } uppercase N, tilde
Ò Ò { Ò } uppercase O, grave accent
Ó Ó { Ó } uppercase O, acute accent
Ô Ô { Ô } uppercase O, circumflex accent
Õ Õ { Õ } uppercase O, tilde
Ö Ö { Ö } uppercase O, umlaut
Ø Ø { Ø } uppercase O, slash
Ù Ù { Ù } uppercase U, grave accent
Ú Ú { Ú } uppercase U, acute accent
Û Û { Û } uppercase U, circumflex accent
Ü Ü { Ü } uppercase U, umlaut
Ý Ý { Ý } uppercase Y, acute accent
Þ Þ { Þ } uppercase THORN, Icelandic
ß ß { ß } lowercase sharps, German
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