[Overview][Index] | Reference for unit 'unicodeducet' (#rtl)

# Reference for unit 'unicodeducet'

Root Unicode collation (DUCET)

`uses`
`System;` |  | The system unit

## Overview

The unicodeducet unit registers the root Unicode collation (DUCET). This collation is needed by all other collations, so any collation unit will include this file.

This unit does not contain any routines. It simply registers the collation in the initialization section of the unit, so including the unit in the uses clause of the program is sufficient.