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# NSSourceTextScalingDocumentOption

The text-scaling mode to associate with the document’s content.

```
extern NSAttributedStringDocumentReadingOptionKey const NSSourceTextScalingDocumentOption;
```

## Discussion

The value of this property is one of the options of the [`NSTextScalingType`](/documentation/AppKit/NSTextScalingType) type. Some platforms scale fonts to improve their appearance. Include this option to specify the text-scaling mode to associate with the document’s contents on disk.

---

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