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Use this tag to refer to the alignment of nucleotide or peptide sequences, producing an arrangement that maximizes similarity between sequences.

Aligned sequences of nucleotide or amino acid residues are typically represented as rows within a matrix. Gaps are inserted between the residues so that identical or similar characters are aligned in successive columns. Sequence alignments are also used for non-biological sequences, such as calculating the edit distance cost between strings in a natural language or in financial data. Popular alignment programs include blast, clustal omega, dialign etc.