MyCSS_PROPERTY_FONT_VARIANT_EAST_ASIAN_JIS78

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_EAST_ASIAN_JIS78 = mycss_property_font_variant_east_asian.MyCSS_PROPERTY_FONT_VARIANT_EAST_ASIAN_JIS78;

Meta