Special characters
From Wcd
If you need to insert special characters, do not use your normal keyboard characters; they will appear in gibberish for users who don't have the same language installed.
Here are the codes you should use instead of the letter you want to put (find below links to more lists of special characters):
Keep in mind that you must remove the extra space between the &, the words and the ;
É = & Eacute ;
é = & eacute ;
Á = & Aacute ;
á = & aacute ;
same system for other characters: I i O o U u Y y
Example: "Touré" = "Tour& eacute ;"
È = & Egrave ;
è = & egrave ;
À = & Agrave ;
à = & agrave ;
same system for other characters: I i O o U u
 = & Acirc ;
â = & acirc ;
same system for other characters: E e I i O o U u
Š = & Scaron ;
š = & scaron ;
system for other characters: unknown / not yet tested
à = & Atilde ;
ã = & atilde ;
same system for other characters: O o N n
Ç = & Ccedil ;
ç = & ccedil ;
Å = & Aring ;
å = & aring ;
Æ = & AElig ;
æ = & aelig ;
Œ = & OElig ;
œ = & oelig ;
Ü = & Uuml ;
ü = & uuml ;
Ä = & Auml ;
ä = & auml ;
same system for O, o, E, e, I, i, Y, y
example for ë = & euml ;
A few other characters:
€ = & euro ;
¢ = & cent ;
£ = & pound ;
§ = & sect ;
© = & copy ;
Ø = & Oslash ;
® = & reg ;
• = & #8226 ;
Here is a list of all these characters and more:
http://de.selfhtml.org/html/referenz/zeichen.htm
This list includes Slavic characters and more: http://khak-ir.blogspot.com/2007/06/special-character.html