I am looking for a detailed specification of the CLUSTAL alignment file format. The one I could find using Google was not very good... Thanks in advance. Best regards, j.zola -- ............................................................................ Jaroslaw Zola Institute of Computer & Information Sciences tel/fax: +48(0)34 3250589 Technical University of Czestochowa zola at icis.pcz.czest.pl Dabrowskiego 73, 42-200 Czestochowa, Poland ............................................................................