                 return (type: kNumberSpacingType, selector: kProportionalNumbersSelector)
             }
         }
+
     }
 
     /// An enumeration representing the kVerticalPositionType features
     public enum VerticalPosition: FontFeatureProvider {
-        case normal, superscript, `subscript`, ordinals, scientificInferiors
+
+        case normal
+        case superscript
+        case `subscript`
+        case ordinals
+        case scientificInferiors
+
         public func featureSettings() -> (type: Int, selector: Int) {
             let selector: Int
             switch self {

            }
            return (type: kVerticalPositionType, selector: selector)
        }
    }

    extension FontFeatureProvider {


    /// An enumeration representing the kNumberCaseType features.
    public enum NumberCase: FontFeatureProvider {

        case upper
        case lower

        public func featureSettings() -> (type: Int, selector: Int) {
            switch self {
            case .upper:
