Acknowledgements to: Jörg Schultz,
Maria Macias, and Conchita Civera for the multiple
alignments and wonderful Molmol pictures.
Date of creation: December 15, 1994
Major updates: April 1996, July 1997, May/Juni/Oct. 2000, & 12.-15. Dec 2023 (html'ed by Y.P. Yuan)