http://www.w3.org/International/resource-index
http://www.phpwact.org/php/i18n/charsets
http://www.w3.org/International/tutorials/tutorial-char-enc/
http://www.iana.org/assignments/character-sets

UNICODE aka ISO/IEC 10646

Unicode, UTF8, UTF-8 & UCS2

See http://www.w3.org/International/questions/qa-forms-utf-8 for a perl regular expression that verifys UTF-8
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