Don't convert between Unicode and other code pages/character sets. If you follow these two rules, you'll run into few I18N-related security issues; in fact, you can jump to the next chapter if these two rules hold true for your application!
Source: wiktionary
After our tour through the translation components we can now make our Python code “i18n-aware”. A typical task is identifying all the places where a (Unicode) string needs to be turned into an i18n message or where the appropriate TAL […]
Source: wiktionary
AngularJS comes with support for I18n and L10n for date, number, and currency. No surprises here!
Source: wiktionary