Collation sequence (Definition)

The order in which objects are sorted lexically according to the locale.

Collation sequences determine the way that information is sorted into the correct sequence. This is likely to be very locale-dependant and therefore if you are going to sort data, you may need to provide a means of plugging in a sort comparator function that is aware of the national language variants if your scripts belong to sites that will be deployed in foreign languages.

This is covered in some depth in the Unicode standard manual.

See also:Localization