This module defines concrete subclasses for the abstract character matrix components that all character matrices must implement. The subclasses defined here apply to DNA character data. In a verbose notation, this data is represented as the "state" attribute of the <cell> element, whose value-space is limited to the IUPAC single character nucleotide symbols (except U). In a compact notation, the same data is represented as a sequence of tokens (whitespace is allowed but has no meaning). The DNAToken simple type is a restriction of AbstractSymbol that defines a token of a IUPAC single character nucleotide token. An IUPAC ambiguity mapping. This is a concrete implementation of the state element, which requires a symbol element, in this case restricted to DNAToken, i.e. a single IUPAC nucleotide symbol, and optional mapping elements to refer to other states. The AbstractState type is the superclass for a state definition. The element encloses a required AbstractSymbol element that in restricted concrete subclasses must be of a sensible type such as a single IUPAC character. It may enclose zero or more AbstractMapping elements to resolve ambiguities. The AbstractState type is the superclass for a state definition. The element encloses a required AbstractSymbol element that in restricted concrete subclasses must be of a sensible type such as a single IUPAC character. It may enclose zero or more AbstractMapping elements to resolve ambiguities. A container for a set of states. A concrete implementation of the AbstractChar element. In this implementation there is no reference to explicitly defined states, as we use the IUPAC standard. There may be a CodonPosition ("codon") attribute, and there must be an identifier ("id") that is of type xs:nonNegativeInteger to define the column number. Nucleotide_Character The DNAFormat class is the container of DNA column definitions. This is a single cell in a matrix containing a nucleotide observation. Nucleotide_State_Datum This is a simple type that specifies a sequence of DNA characters, following IUPAC single character symbols for nucleotides (and ambiguities). This is a row in a matrix of DNA data containing raw sequence data. This is a row in a matrix of DNA data containing granular observations. A matrix of rows with seq strings of type DNA. A matrix of rows with single character observations. A DNA characters block consisting of sequences preceded by metadata. A DNA characters block consisting of granular cells preceded by metadata.