Additional OpenType features include subscript/superscript. OpenType features include subscript and superscript. OpenType features include numerators/denominators, fractions, ligatures, scientific inferiors, subscript/superscript. They may also include separate styles for superscript and subscript digits. Several advanced features of OpenType typefaces are support for professionally designed subscript and superscript glyphs. This meant that the same matrix could be used for both superscript and subscript numbers. In Schoenflies notation, point groups are denoted by a letter symbol with a subscript. The subscript S denotes a surface condition. When adding vectors with various subscript values, the lowest subscript applies for the resulting vector. The variable ^Car("Door") could have a nested variable subscript of "Color" for example. There are several conventions of Okinawan kana that involve subscript digraphs or ligatures. The subscript n usually indicates the normal. The subscript from the step symbol formula 80 is here omitted. We henceforth omit the "m" subscript. The subscript '0' indicates the value of the Hubble constant today.