Map the names in a feature bitmap to different names. Used to convert from a feature code bitmap to a feature name bitmap.
E.g. { F: true } -> { foo: true }
If a name isn't present leaves the feature code intact.
Map the names in a feature bitmap to different names. Used to convert from a feature code bitmap to a feature name bitmap.
E.g. { F: true } -> { foo: true }
If a name isn't present leaves the feature code intact.