On Wed, May 4, 2011 at 3:51 PM, debutant.bioperl <joyeux2000 at hotmail.fr> wrote: > > %-|%-| > Was that some cryptic Perl code that I don't get, or two smilies? Try reading about BioPerl's SeqIO module for reading FASTA files. http://www.bioperl.org/wiki/HOWTO:SeqIO Peter