| HB_AAT_LAYOUT_FEATURE_SELECTOR_INVALID | Initial, unset feature selector |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_ALL_TYPE_FEATURES_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_ALL_TYPOGRAPHIC |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_ALL_TYPE_FEATURES_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_ALL_TYPOGRAPHIC |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_REQUIRED_LIGATURES_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_REQUIRED_LIGATURES_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_COMMON_LIGATURES_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_COMMON_LIGATURES_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_RARE_LIGATURES_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_RARE_LIGATURES_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_LOGOS_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_LOGOS_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_REBUS_PICTURES_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_REBUS_PICTURES_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_DIPHTHONG_LIGATURES_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_DIPHTHONG_LIGATURES_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_SQUARED_LIGATURES_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_SQUARED_LIGATURES_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_ABBREV_SQUARED_LIGATURES_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_ABBREV_SQUARED_LIGATURES_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_SYMBOL_LIGATURES_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_SYMBOL_LIGATURES_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_LIGATURES_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_LIGATURES_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_HISTORICAL_LIGATURES_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_HISTORICAL_LIGATURES_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_UNCONNECTED | for HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_PARTIALLY_CONNECTED | for HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_CURSIVE | for HB_AAT_LAYOUT_FEATURE_TYPE_LIGATURES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_UPPER_AND_LOWER_CASE | Deprecated |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_ALL_CAPS | Deprecated |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_ALL_LOWER_CASE | Deprecated |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_SMALL_CAPS | Deprecated |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_INITIAL_CAPS | Deprecated |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_INITIAL_CAPS_AND_SMALL_CAPS | Deprecated |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_SUBSTITUTE_VERTICAL_FORMS_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_SUBSTITUTION |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_SUBSTITUTE_VERTICAL_FORMS_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_SUBSTITUTION |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_LINGUISTIC_REARRANGEMENT_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_LINGUISTIC_REARRANGEMENT |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_LINGUISTIC_REARRANGEMENT_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_LINGUISTIC_REARRANGEMENT |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_MONOSPACED_NUMBERS | for HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_SPACING |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_NUMBERS | for HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_SPACING |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_THIRD_WIDTH_NUMBERS | for HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_SPACING |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_QUARTER_WIDTH_NUMBERS | for HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_SPACING |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_WORD_INITIAL_SWASHES_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_WORD_INITIAL_SWASHES_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_WORD_FINAL_SWASHES_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_WORD_FINAL_SWASHES_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_LINE_INITIAL_SWASHES_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_LINE_INITIAL_SWASHES_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_LINE_FINAL_SWASHES_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_LINE_FINAL_SWASHES_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_NON_FINAL_SWASHES_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_NON_FINAL_SWASHES_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_SMART_SWASH_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_SHOW_DIACRITICS | for HB_AAT_LAYOUT_FEATURE_TYPE_DIACRITICS_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_HIDE_DIACRITICS | for HB_AAT_LAYOUT_FEATURE_TYPE_DIACRITICS_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_DECOMPOSE_DIACRITICS | for HB_AAT_LAYOUT_FEATURE_TYPE_DIACRITICS_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_NORMAL_POSITION | for HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_POSITION |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_SUPERIORS | for HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_POSITION |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_INFERIORS | for HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_POSITION |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_ORDINALS | for HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_POSITION |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_SCIENTIFIC_INFERIORS | for HB_AAT_LAYOUT_FEATURE_TYPE_VERTICAL_POSITION |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_FRACTIONS | for HB_AAT_LAYOUT_FEATURE_TYPE_FRACTIONS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_VERTICAL_FRACTIONS | for HB_AAT_LAYOUT_FEATURE_TYPE_FRACTIONS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_DIAGONAL_FRACTIONS | for HB_AAT_LAYOUT_FEATURE_TYPE_FRACTIONS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_PREVENT_OVERLAP_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_OVERLAPPING_CHARACTERS_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_PREVENT_OVERLAP_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_OVERLAPPING_CHARACTERS_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHENS_TO_EM_DASH_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHENS_TO_EM_DASH_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHEN_TO_EN_DASH_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHEN_TO_EN_DASH_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_SLASHED_ZERO_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_SLASHED_ZERO_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_FORM_INTERROBANG_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_FORM_INTERROBANG_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_SMART_QUOTES_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_SMART_QUOTES_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_PERIODS_TO_ELLIPSIS_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_PERIODS_TO_ELLIPSIS_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_TYPOGRAPHIC_EXTRAS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHEN_TO_MINUS_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_HYPHEN_TO_MINUS_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_ASTERISK_TO_MULTIPLY_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_ASTERISK_TO_MULTIPLY_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_SLASH_TO_DIVIDE_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_SLASH_TO_DIVIDE_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_INEQUALITY_LIGATURES_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_INEQUALITY_LIGATURES_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_EXPONENTS_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_EXPONENTS_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_MATHEMATICAL_GREEK_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_MATHEMATICAL_GREEK_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_MATHEMATICAL_EXTRAS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_ORNAMENTS | for HB_AAT_LAYOUT_FEATURE_TYPE_ORNAMENT_SETS_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_DINGBATS | for HB_AAT_LAYOUT_FEATURE_TYPE_ORNAMENT_SETS_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_PI_CHARACTERS | for HB_AAT_LAYOUT_FEATURE_TYPE_ORNAMENT_SETS_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_FLEURONS | for HB_AAT_LAYOUT_FEATURE_TYPE_ORNAMENT_SETS_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_DECORATIVE_BORDERS | for HB_AAT_LAYOUT_FEATURE_TYPE_ORNAMENT_SETS_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_INTERNATIONAL_SYMBOLS | for HB_AAT_LAYOUT_FEATURE_TYPE_ORNAMENT_SETS_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_MATH_SYMBOLS | for HB_AAT_LAYOUT_FEATURE_TYPE_ORNAMENT_SETS_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_ALTERNATES | for HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_DESIGN_LEVEL1 | for HB_AAT_LAYOUT_FEATURE_TYPE_DESIGN_COMPLEXITY_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_DESIGN_LEVEL2 | for HB_AAT_LAYOUT_FEATURE_TYPE_DESIGN_COMPLEXITY_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_DESIGN_LEVEL3 | for HB_AAT_LAYOUT_FEATURE_TYPE_DESIGN_COMPLEXITY_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_DESIGN_LEVEL4 | for HB_AAT_LAYOUT_FEATURE_TYPE_DESIGN_COMPLEXITY_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_DESIGN_LEVEL5 | for HB_AAT_LAYOUT_FEATURE_TYPE_DESIGN_COMPLEXITY_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_STYLE_OPTIONS | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLE_OPTIONS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_DISPLAY_TEXT | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLE_OPTIONS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_ENGRAVED_TEXT | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLE_OPTIONS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_ILLUMINATED_CAPS | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLE_OPTIONS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_TITLING_CAPS | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLE_OPTIONS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_TALL_CAPS | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLE_OPTIONS |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_CHARACTERS | for HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_SIMPLIFIED_CHARACTERS | for HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_JIS1978_CHARACTERS | for HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_JIS1983_CHARACTERS | for HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_JIS1990_CHARACTERS | for HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_ALT_ONE | for HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_ALT_TWO | for HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_ALT_THREE | for HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_ALT_FOUR | for HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_ALT_FIVE | for HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_EXPERT_CHARACTERS | for HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_JIS2004_CHARACTERS | for HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_HOJO_CHARACTERS | for HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_NLCCHARACTERS | for HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_TRADITIONAL_NAMES_CHARACTERS | for HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_SHAPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_LOWER_CASE_NUMBERS | for HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_CASE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_UPPER_CASE_NUMBERS | for HB_AAT_LAYOUT_FEATURE_TYPE_NUMBER_CASE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_TEXT | for HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_MONOSPACED_TEXT | for HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_HALF_WIDTH_TEXT | for HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_THIRD_WIDTH_TEXT | for HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_QUARTER_WIDTH_TEXT | for HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_ALT_PROPORTIONAL_TEXT | for HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_ALT_HALF_WIDTH_TEXT | for HB_AAT_LAYOUT_FEATURE_TYPE_TEXT_SPACING |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_TRANSLITERATION | for HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_HANJA_TO_HANGUL | for HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_HIRAGANA_TO_KATAKANA | for HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_KATAKANA_TO_HIRAGANA | for HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_KANA_TO_ROMANIZATION | for HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_ROMANIZATION_TO_HIRAGANA | for HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_ROMANIZATION_TO_KATAKANA | for HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_HANJA_TO_HANGUL_ALT_ONE | for HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_HANJA_TO_HANGUL_ALT_TWO | for HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_HANJA_TO_HANGUL_ALT_THREE | for HB_AAT_LAYOUT_FEATURE_TYPE_TRANSLITERATION |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_ANNOTATION | for HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_BOX_ANNOTATION | for HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_ROUNDED_BOX_ANNOTATION | for HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_CIRCLE_ANNOTATION | for HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_INVERTED_CIRCLE_ANNOTATION | for HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_PARENTHESIS_ANNOTATION | for HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_PERIOD_ANNOTATION | for HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_ROMAN_NUMERAL_ANNOTATION | for HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_DIAMOND_ANNOTATION | for HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_INVERTED_BOX_ANNOTATION | for HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_INVERTED_ROUNDED_BOX_ANNOTATION | for HB_AAT_LAYOUT_FEATURE_TYPE_ANNOTATION_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_FULL_WIDTH_KANA | for HB_AAT_LAYOUT_FEATURE_TYPE_KANA_SPACING_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_KANA | for HB_AAT_LAYOUT_FEATURE_TYPE_KANA_SPACING_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_FULL_WIDTH_IDEOGRAPHS | for HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_SPACING_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_IDEOGRAPHS | for HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_SPACING_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_HALF_WIDTH_IDEOGRAPHS | for HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_SPACING_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_CANONICAL_COMPOSITION_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_UNICODE_DECOMPOSITION_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_CANONICAL_COMPOSITION_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_UNICODE_DECOMPOSITION_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_COMPATIBILITY_COMPOSITION_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_UNICODE_DECOMPOSITION_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_COMPATIBILITY_COMPOSITION_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_UNICODE_DECOMPOSITION_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_TRANSCODING_COMPOSITION_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_UNICODE_DECOMPOSITION_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_TRANSCODING_COMPOSITION_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_UNICODE_DECOMPOSITION_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_RUBY_KANA | Deprecated; use HB_AAT_LAYOUT_FEATURE_SELECTOR_RUBY_KANA_OFF instead |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_RUBY_KANA | Deprecated; use HB_AAT_LAYOUT_FEATURE_SELECTOR_RUBY_KANA_ON instead |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_RUBY_KANA_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_RUBY_KANA |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_RUBY_KANA_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_RUBY_KANA |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_CJK_SYMBOL_ALTERNATIVES | for HB_AAT_LAYOUT_FEATURE_TYPE_CJK_SYMBOL_ALTERNATIVES_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_SYMBOL_ALT_ONE | for HB_AAT_LAYOUT_FEATURE_TYPE_CJK_SYMBOL_ALTERNATIVES_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_SYMBOL_ALT_TWO | for HB_AAT_LAYOUT_FEATURE_TYPE_CJK_SYMBOL_ALTERNATIVES_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_SYMBOL_ALT_THREE | for HB_AAT_LAYOUT_FEATURE_TYPE_CJK_SYMBOL_ALTERNATIVES_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_SYMBOL_ALT_FOUR | for HB_AAT_LAYOUT_FEATURE_TYPE_CJK_SYMBOL_ALTERNATIVES_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_SYMBOL_ALT_FIVE | for HB_AAT_LAYOUT_FEATURE_TYPE_CJK_SYMBOL_ALTERNATIVES_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_IDEOGRAPHIC_ALTERNATIVES | for HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_ALTERNATIVES_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_IDEOGRAPHIC_ALT_ONE | for HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_ALTERNATIVES_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_IDEOGRAPHIC_ALT_TWO | for HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_ALTERNATIVES_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_IDEOGRAPHIC_ALT_THREE | for HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_ALTERNATIVES_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_IDEOGRAPHIC_ALT_FOUR | for HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_ALTERNATIVES_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_IDEOGRAPHIC_ALT_FIVE | for HB_AAT_LAYOUT_FEATURE_TYPE_IDEOGRAPHIC_ALTERNATIVES_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_VERTICAL_ROMAN_CENTERED | for HB_AAT_LAYOUT_FEATURE_TYPE_CJK_VERTICAL_ROMAN_PLACEMENT_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_VERTICAL_ROMAN_HBASELINE | for HB_AAT_LAYOUT_FEATURE_TYPE_CJK_VERTICAL_ROMAN_PLACEMENT_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_CJK_ITALIC_ROMAN | Deprecated; use HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_ITALIC_ROMAN_OFF instead |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_ITALIC_ROMAN | Deprecated; use HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_ITALIC_ROMAN_ON instead |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_ITALIC_ROMAN_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_ITALIC_CJK_ROMAN |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_CJK_ITALIC_ROMAN_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_ITALIC_CJK_ROMAN |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_CASE_SENSITIVE_LAYOUT_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_CASE_SENSITIVE_LAYOUT |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_CASE_SENSITIVE_LAYOUT_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_CASE_SENSITIVE_LAYOUT |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_CASE_SENSITIVE_SPACING_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_CASE_SENSITIVE_LAYOUT |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_CASE_SENSITIVE_SPACING_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_CASE_SENSITIVE_LAYOUT |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_ALTERNATE_HORIZ_KANA_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_ALTERNATE_KANA |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_ALTERNATE_HORIZ_KANA_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_ALTERNATE_KANA |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_ALTERNATE_VERT_KANA_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_ALTERNATE_KANA |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_ALTERNATE_VERT_KANA_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_ALTERNATE_KANA |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_NO_STYLISTIC_ALTERNATES | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_ONE_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_ONE_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWO_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWO_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_THREE_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_THREE_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FOUR_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FOUR_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FIVE_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FIVE_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SIX_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SIX_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SEVEN_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SEVEN_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_EIGHT_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_EIGHT_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_NINE_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_NINE_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TEN_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TEN_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_ELEVEN_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_ELEVEN_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWELVE_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWELVE_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_THIRTEEN_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_THIRTEEN_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FOURTEEN_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FOURTEEN_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FIFTEEN_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_FIFTEEN_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SIXTEEN_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SIXTEEN_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SEVENTEEN_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_SEVENTEEN_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_EIGHTEEN_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_EIGHTEEN_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_NINETEEN_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_NINETEEN_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWENTY_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_STYLISTIC_ALT_TWENTY_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_STYLISTIC_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_ALTERNATES_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_CONTEXTUAL_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_ALTERNATES_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_CONTEXTUAL_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_SWASH_ALTERNATES_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_CONTEXTUAL_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_SWASH_ALTERNATES_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_CONTEXTUAL_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_SWASH_ALTERNATES_ON | for HB_AAT_LAYOUT_FEATURE_TYPE_CONTEXTUAL_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_CONTEXTUAL_SWASH_ALTERNATES_OFF | for HB_AAT_LAYOUT_FEATURE_TYPE_CONTEXTUAL_ALTERNATIVES |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_DEFAULT_LOWER_CASE | for HB_AAT_LAYOUT_FEATURE_TYPE_LOWER_CASE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_LOWER_CASE_SMALL_CAPS | for HB_AAT_LAYOUT_FEATURE_TYPE_LOWER_CASE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_LOWER_CASE_PETITE_CAPS | for HB_AAT_LAYOUT_FEATURE_TYPE_LOWER_CASE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_DEFAULT_UPPER_CASE | for HB_AAT_LAYOUT_FEATURE_TYPE_UPPER_CASE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_UPPER_CASE_SMALL_CAPS | for HB_AAT_LAYOUT_FEATURE_TYPE_UPPER_CASE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_UPPER_CASE_PETITE_CAPS | for HB_AAT_LAYOUT_FEATURE_TYPE_UPPER_CASE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_HALF_WIDTH_CJK_ROMAN | for HB_AAT_LAYOUT_FEATURE_TYPE_CJK_ROMAN_SPACING_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_PROPORTIONAL_CJK_ROMAN | for HB_AAT_LAYOUT_FEATURE_TYPE_CJK_ROMAN_SPACING_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_DEFAULT_CJK_ROMAN | for HB_AAT_LAYOUT_FEATURE_TYPE_CJK_ROMAN_SPACING_TYPE |  | 
| HB_AAT_LAYOUT_FEATURE_SELECTOR_FULL_WIDTH_CJK_ROMAN | for HB_AAT_LAYOUT_FEATURE_TYPE_CJK_ROMAN_SPACING_TYPE |  |