Are you talking about the thread title? If so there are special characters, HOWEVER, thing to note:
- Not everyone will actually see those font characters. They can display as an ugly box for some.
"When a character is displayed using a font that doesn’t support that character, a default “not defined” glyph from that font is used. The “not defined” glyph in most fonts has the appearance of a rectangular box, or some variation of that."
- It risks making your URLs a mess. A hot mess because it converts the 'code' of the letter for the non-universal font into depending on what 'font' you use.