The complementary process of adapting a system for a specific target audience is called Localization .

Among other things, internationalization covers adapting to differences in:

• writing systems
• units of measure (currency, °C/°F, km/miles, etc.)
• time and date formats
• keyboard layouts

The work of the Unicode Consortium is a fundamental part of internationalization. Unicode supports not only variations among the world's writing systems but also cultural variations such as currencies and time/date formats.