---
title: Fixed Ordering Scheme
framework: coreservices
role: collectionGroup
path: coreservices/carbon_core/unicode_utilities/1390361-fixed_ordering_scheme
---

# Fixed Ordering Scheme

Specifies to use the fixed ordering scheme.

## Overview

Overview UCCollateOptions is a 32-bit value. Bits 0-23 are described in  UCCollateOptions. The field consisting of bits 24-31 is used for values that specify which fixed ordering scheme to use with the function  UCCompareTextNoLocale(_:_:_:_:_:_:_:). Currently only one such scheme is provided. Constants are provided for setting and testing the UCCollateOptions field that specifies the ordering scheme. These values are described in  Fixed Ordering Masks 1  and  Fixed Ordering Masks 2.

## Topics

### Constants

- [kUCCollateTypeHFSExtended](coreservices/kuccollatetypehfsextended.md)