MyCSS_PROPERTY_FONT_VARIANT_ALTERNATES_HISTORICAL_FORMS

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
extern (C)
enum MyCSS_PROPERTY_FONT_VARIANT_ALTERNATES_HISTORICAL_FORMS = mycss_property_font_variant_alternates.MyCSS_PROPERTY_FONT_VARIANT_ALTERNATES_HISTORICAL_FORMS;

Meta