Wiki: RFCs/Localization

/Translations - NLS - Native Language Support (LC_MESSAGES)
/Input methods - Entering text: non-latin character sets, entry of ideographic characters.
/Output methods - Displaying text: RTL, vertical languages, position dependent characters.
/Data formatting - Formatting of time, date, monetary value and numerical values. (LC_TIME, LC_NUMERIC, LC_MONETARY)
/Collation - Comparing strings/characters. (LC_COLLATE)
/Classification? - Classification of characters, case conversion etc. (LC_CTYPE)
/Translated Software - A list of software that has been translation enabled, and the languages they support.

The text inside parenthesis refer to the locale category as designated by GNU libc.