Unicode has many advantageous functions.
The operating system provides multilingual support. Unicode provides the means to store and retrieve data in the user's national language of choice in a single file, and therefore provides for one database file to support all text needs, regardless of the language of the input device. For example, the same parts file can have Greek, Russian, and English descriptions and names in it.
Unicode allows for the use of combining characters. A combining
character is a non-spacing character that is used together with a non-combining
character to form a composite character, or glyph. For example, Latin small
letter A used with a combining tilde results in 
.