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Identifies the typographic feature in the OpenType font.
public class FontFeature
  Public Class FontFeature
  | Name | Description | 
|---|---|
| FontFeature(FeatureTag) | Initializes a new instance of FontFeature, enabled by default.  | 
      
| FontFeature(FeatureTag, bool) | Initializes a new instance of FontFeature with a value indicating whether the feature is enable or disabled.  | 
      
| FontFeature(FeatureTag, int, bool) | Initializes a new instance of FontFeature with the specified 1-based position of alternate glyph ID.  | 
      
| Name | Description | 
|---|---|
| ApplyLastAlternativeIfNotAvailable | Indicates whether the last alternative should be applied if the specified position exceeds the number of alternatives.  | 
      
| Enabled | Gets or sets a value indicating whether the feature should be enabled.  | 
      
| FeatureTag | The OpenType name identifier of the feature.  | 
      
| Parameter | Specifies 1-based position of the alternate glyph ID in Alternate Substitution lookup.  |