ISO/IEC 646 is a "standard that specifies a 7-bit character code from which several national standards are derived, the best known of which is ASCII."
ISO site, "ISO/IEC 646:1991 Information technology -- ISO 7-bit coded character set for information interchange," http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=4777
Wikipedia (EN), "ISO 646," http://en.wikipedia.org/wiki/ISO/IEC_646
______ (FR), "ISO 646," http://fr.wikipedia.org/wiki/ISO_646
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