---
title: kUnicodeFallbackSequencingMask
framework: Core Services
role: symbol
role_heading: Enumeration Case
platforms: [Mac Catalyst 17.0+, macOS 10.0+]
path: coreservices/1433622-unicode_fallback_sequencing_mask/kunicodefallbacksequencingmask
---

# kUnicodeFallbackSequencingMask

## Declaration

```occ
kUnicodeFallbackSequencingMask = 3L << kUnicodeFallbackSequencingBits
```