* IETF における定義

[1] 
>
In the IETF, the term "internationalization" is used to describe
adding or improving the handling of non-ASCII text in a protocol.

;; [CITE@en[RFC 3536 - Terminology Used in Internationalization in the IETF]] ([TIME[2011-01-29 02:14:52 +09:00]] 版) <http://tools.ietf.org/html/rfc3536#page-6>

;; [CITE@en[RFC 4690 - Review and Recommendations for Internationalized Domain Names (IDNs)]] ([TIME[2011-03-27 16:14:29 +09:00]] 版) <http://tools.ietf.org/html/rfc4690#section-1.5.5>


[2] [CITE@en[RFC 6365 - Terminology Used in Internationalization in the IETF]]
([TIME[2011-09-10 19:11:51 +09:00]] 版)
<http://tools.ietf.org/html/rfc6365#page-8>