func buildMonospace() ([]byte, error) { return buildFont(C.CTFontCreateUIFontForLanguage(C.kCTFontUserFixedPitchFontType, 0, nil)), nil }
func buildDefault() ([]byte, error) { return buildFont(C.CTFontCreateUIFontForLanguage(C.kCTFontSystemFontType, 0, nil)), nil }