Is it possible that XML accept UNICODE characters

Yes XML documents can contain foreign characters, like Norwegian æ ø å , or French ê è é.But XML document can not under stand this to understand this we have to take XML as UNICODE.There are some encoding techniques.

<?xml version="1.0" encoding="windows-1252"?>

<?xml version="1.0" encoding="ISO-8859-1"?>

<?xml version="1.0" encoding="UTF-8"?>

<?xml version="1.0" encoding="UTF-16"?>.