Aline: An Extensible WYSIWYG Protein Sequence Alignment Editor for Publication Quality Figures. Aline is an interactive perl/tk application which can read common sequence alignment formats which the user can then alter, embellish, markup etc to produce the kind of sequence figure commonly found in biochemical articles. Please cite: Bond, C.S. and Schüttelkopf, A.W. (2009), Acta cryst. D65, 510-512 NOTE: Although not needed for running Aline, clustalw and mkDSSP are desirable for its complete functionality. A third tool is CHAINSAW, part of the CCP4 suite (http://www.ccp4.ac.uk/). Visit the web site for more information and installation instructions if you want it.