---
title: Additional Writing Directions
framework: appkit
role: collectionGroup
role_heading: API Collection
path: appkit/additional-writing-directions
---

# Additional Writing Directions

Constants that specify additional options when setting the writing direction of attributed strings.

## Overview

Overview You can use the logical OR operator to combine these constants with NSWritingDirection.leftToRight or NSWritingDirection.rightToLeft when used with writingDirection to specify formatting controls defined by the Unicode Bidirectional Algorithm in Unicode Standard Annex #9.

## Topics

### Constants

- [NSTextWritingDirectionEmbedding](appkit/nstextwritingdirectionembedding.md)
- [NSTextWritingDirectionOverride](appkit/nstextwritingdirectionoverride.md)

## See Also

### Enumerations

- [NSMultibyteGlyphPacking](appkit/nsmultibyteglyphpacking.md)
- [Glyph Attributes](appkit/glyph-attributes.md)
- [NSOpenGLGlobalOption](appkit/nsopenglglobaloption.md)
- [Data Entry Types](appkit/data-entry-types.md)
- [Anonymous](appkit/nsbuttontypes-anonymous.md)
- [Return values for modal operations](appkit/return-values-for-modal-operations.md)
- [Tags of Views in the FontPanel](appkit/tags-of-views-in-the-fontpanel.md)