---
title: kCTTypesetterOptionDisableBidiProcessing
framework: coretext
role: symbol
role_heading: Global Variable
path: coretext/kcttypesetteroptiondisablebidiprocessing
---

# kCTTypesetterOptionDisableBidiProcessing

## Declaration

```swift
let kCTTypesetterOptionDisableBidiProcessing: CFString
```

## Discussion

Discussion Disables bidirectional processing. Value must be a CFBoolean object. Default value is false. Normally, typesetting applies the Unicode Bidirectional Algorithm as described in Unicode Standard Annex #9. If a typesetter is created with this option set to true, no directional reordering is performed, and any directional control characters are ignored.

## See Also

### Constants

- [kCTTypesetterOptionForcedEmbeddingLevel](coretext/kcttypesetteroptionforcedembeddinglevel.md)
- [kCTTypesetterOptionAllowUnboundedLayout](coretext/kcttypesetteroptionallowunboundedlayout.md)