# `GSPenOperation`

*Structure*

## Declaration

```swift
struct GSPenOperation
```

```objc
enum GSPenOperation : uint8_t;
```

```python
GSPenOperation
```

## Topics

### Enumeration Cases

- [`GSPenOperation.GSPenOperationCubic`](/Core/GlyphsCore/GSPenOperation/GSPenOperationCubic)
- [`GSPenOperation.GSPenOperationHobby`](/Core/GlyphsCore/GSPenOperation/GSPenOperationHobby)
- [`GSPenOperation.GSPenOperationQuadratic`](/Core/GlyphsCore/GSPenOperation/GSPenOperationQuadratic)
- [`GSPenOperation.GSPenOperationQuartic`](/Core/GlyphsCore/GSPenOperation/GSPenOperationQuartic)
- [`GSPenOperation.GSPenOperationRaph`](/Core/GlyphsCore/GSPenOperation/GSPenOperationRaph)