All strings in wxEuphoria are Unicode. It uses wide characters (which are basically 4-byte integers) to create wxStrings. If your application only uses ASCII characters, you probably won't even notice a difference. If you use Unicode characters, they should be stored as an integer (or atom) in a sequence, using the normal U+xxxx values.

Note that you may need to switch fonts (especially under windows) in order to see all of the glyphs, as not all fonts have all glyphs.