codon_dist              Calculating the codon usage difference between
                        sequences
codon_mimic             Mimic a target codon usage bias
codon_random            Generate random synonymous mutations
codon_to                Maximize or minimize the usage of certain
                        codon.
dinu_dist               Calculating the dinucleotide usage difference
                        between sequences
dinu_to                 Maximize or minimize the usage of certain
                        dinucleotide.
get_cu                  Get codon usage matrix
get_dna                 Get the DNAStringSet data
get_du                  Get dinucleotide usage matrix
get_freq                Get codon usage frequency of synonymous codons
get_nu                  Get nucleotide usage matrix
get_region              Get the variable region
get_rscu                Get Relative Synonymous Codon Usage (rscu) of
                        synonymous codons
input_seq               Import region / constructing regioned_dna
                        object
regioned_dna-class      An S4 class to record DNA sequences and
                        variable regions for mutations
seq_random              Generate 'n' random DNA sequnces of length 'm'
