# OptionSet Implementations

*API Collection*

## Topics

### Initializers

- [`GSWritingDirection init()`](/Core/GlyphsCore/GSWritingDirection/init())

### Instance Methods

- [`GSWritingDirection contains(_:)`](/Core/GlyphsCore/GSWritingDirection/contains(_:))
- [`GSWritingDirection formIntersection(_:)`](/Core/GlyphsCore/GSWritingDirection/formIntersection(_:))
- [`GSWritingDirection formSymmetricDifference(_:)`](/Core/GlyphsCore/GSWritingDirection/formSymmetricDifference(_:))
- [`GSWritingDirection formUnion(_:)`](/Core/GlyphsCore/GSWritingDirection/formUnion(_:))
- [`GSWritingDirection insert(_:)`](/Core/GlyphsCore/GSWritingDirection/insert(_:))
- [`GSWritingDirection insert(_:)`](/Core/GlyphsCore/GSWritingDirection/insert(_:)-8nqv9)
- [`GSWritingDirection intersection(_:)`](/Core/GlyphsCore/GSWritingDirection/intersection(_:))
- [`GSWritingDirection remove(_:)`](/Core/GlyphsCore/GSWritingDirection/remove(_:))
- [`GSWritingDirection symmetricDifference(_:)`](/Core/GlyphsCore/GSWritingDirection/symmetricDifference(_:))
- [`GSWritingDirection union(_:)`](/Core/GlyphsCore/GSWritingDirection/union(_:))
- [`GSWritingDirection update(with:)`](/Core/GlyphsCore/GSWritingDirection/update(with:))