quired fields in a FontInfo blend dictionary */
    <a href="ft2-type1_tables.html#T1_BLEND_UNDERLINE_POSITION">T1_BLEND_UNDERLINE_POSITION</a> = 0,
    <a href="ft2-type1_tables.html#T1_BLEND_UNDERLINE_THICKNESS">T1_BLEND_UNDERLINE_THICKNESS</a>,
    <a href="ft2-type1_tables.html#T1_BLEND_ITALIC_ANGLE">T1_BLEND_ITALIC_ANGLE</a>,

    /* required fields in a Private blend dictionary */
    <a href="ft2-type1_tables.html#T1_BLEND_BLUE_VALUES">T1_BLEND_BLUE_VALUES</a>,
    <a href="ft2-type1_tables.html#T1_B