NSWritingDirectionFormatType
Constants for the writing direction attribute key.
Declaration
enum NSWritingDirectionFormatTypeOverview
Use these constants as the values for the writingDirection key.
You can use the logical OR operator to combine these constants with NSWritingDirection.leftToRight or NSWritingDirection.rightToLeft when used with writingDirection to specify formatting controls defined by the Unicode Bidirectional Algorithm in Unicode Standard Annex #9.