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# AXBrailleMapRenderer

The interface for providing data for a braille map.

```
protocol AXBrailleMapRenderer : NSObjectProtocol
```

## Overview

You update the braille display in one of these ways:

- Implement [`accessibilityBrailleMapRenderRegion`](/documentation/Accessibility/AXBrailleMapRenderer/accessibilityBrailleMapRenderRegion)
  to specify an area of the UI to render to the braille display. With this approach,
  VoiceOver handles the process of converting the data to a braille map by rendering
  the image of the screen in that region and updating the braille display automatically.
- Implement [`accessibilityBrailleMapRenderer`](/documentation/Accessibility/AXBrailleMapRenderer/accessibilityBrailleMapRenderer)
  to update the braille map manually. With this approach, you get more detailed control
  over what to display, but you must modify the braille map yourself.

## Topics

### Rendering a specific region

[`accessibilityBrailleMapRenderRegion`](/documentation/Accessibility/AXBrailleMapRenderer/accessibilityBrailleMapRenderRegion)

A region of the UI that the system converts into a braille map and displays on the
braille display.

### Updating the braille map manually

[`accessibilityBrailleMapRenderer`](/documentation/Accessibility/AXBrailleMapRenderer/accessibilityBrailleMapRenderer)

A handler that the system calls to let you update the Braille map.

## Relationships

### Inherits From

[`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol)

---

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