Universal Character Set

The Universal Character Set (UCS), defined by the International Standard ISO/IEC 10646, Information technology — Universal multiple-octet coded character set (UCS) (plus amendments to that standard), is a standard set of characters upon which many character encodings are based.

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ISO 646 (positions 0 to 128 are the same as in ISO/IEC 10646 and Unicode, and the number 646 is similar to 10646 are similar)

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