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# UIFontDescriptor.SystemDesign

Constants that describe the system-defined typeface designs.

```
struct SystemDesign
```

## Overview

Use these constants to specify a system-provided typeface design, such as:

- SF Pro in iOS or SF Compact in watchOS ([`default`](/documentation/UIKit/UIFontDescriptor/SystemDesign/default))
- SF Pro Rounded in iOS or SF Compact Rounded in watchOS ([`rounded`](/documentation/UIKit/UIFontDescriptor/SystemDesign/rounded))
- SF Mono ([`monospaced`](/documentation/UIKit/UIFontDescriptor/SystemDesign/monospaced))
- New York ([`serif`](/documentation/UIKit/UIFontDescriptor/SystemDesign/serif))

## Topics

### Typeface designs

[`default`](/documentation/UIKit/UIFontDescriptor/SystemDesign/default)

The default typeface for an app’s user interface.

[`rounded`](/documentation/UIKit/UIFontDescriptor/SystemDesign/rounded)

The rounded variant of the default typeface.

[`monospaced`](/documentation/UIKit/UIFontDescriptor/SystemDesign/monospaced)

The monospace variant of the default typeface.

[`serif`](/documentation/UIKit/UIFontDescriptor/SystemDesign/serif)

The serif variant of the default typeface.

### Initializers

[`init(rawValue:)`](/documentation/UIKit/UIFontDescriptor/SystemDesign/init(rawValue:))

Creates a typeface design constant with the specified raw value.


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