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# Typesetter Options

Control aspects of the typesetter’s text processing.

## Topics

### Constants

[`let kCTTypesetterOptionForcedEmbeddingLevel: CFString`](/documentation/CoreText/kCTTypesetterOptionForcedEmbeddingLevel)

A key that specifies the embedding level of the typesetter’s text.

[`let kCTTypesetterOptionAllowUnboundedLayout: CFString`](/documentation/CoreText/kCTTypesetterOptionAllowUnboundedLayout)

A key that specifies whether the text system lays out text that requires unreasonable effort.

[`let kCTTypesetterOptionDisableBidiProcessing: CFString`](/documentation/CoreText/kCTTypesetterOptionDisableBidiProcessing)


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