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:
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 ;
same system for other characters: a E e I i O o U u
à = & Atilde ;
same system for other characters: a O o N n
Ç = & Ccedil ;
ç = & ccedil ;
Å = & Aring ;
å = & aring ;
Æ = & AElig ;
æ = & aelig ;
Ü = & Uuml ;
ü = & uuml ;
same system for a, A, o, O, e E i I
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
Note: I couldn't find the codes for Slavic characters. If someone knows how to properly include them, please add info in this page.