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# kCMTextMarkupAttribute_VerticalLayout

The vertical layout of a text block.

```
let kCMTextMarkupAttribute_VerticalLayout: CFString
```

## Discussion

Specifying this attribute indicates that the writing direction is vertical instead of horizontal. You can set the associated value to [`kCMTextVerticalLayout_LeftToRight`](/documentation/CoreMedia/kCMTextVerticalLayout_LeftToRight) or [`kCMTextVerticalLayout_RightToLeft`](/documentation/CoreMedia/kCMTextVerticalLayout_RightToLeft) to indicate the progression direction for new vertical lines of text.

## Topics

### Layouts

[`kCMTextVerticalLayout_LeftToRight`](/documentation/CoreMedia/kCMTextVerticalLayout_LeftToRight)

Add new vertical lines from left to right.

[`kCMTextVerticalLayout_RightToLeft`](/documentation/CoreMedia/kCMTextVerticalLayout_RightToLeft)

Add new vertical lines from right to left.


---

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