only characters supported are A-Z, a-z and 0-9. This is way too restrictive to my taste and I never got a valid explanation for it. Please allow support for:
- All of Unicode characters. If not, please at least alllow the following:
- underscores
- spaces
- special characters like !@#$%?&*()+=/\|:<>;
- accented characters like éèàùôîûêâöüï
5. All of Unicode