Greeting, I am very interested in Bio::SeqIO::tigr.pm and would like to try it out on Tiger Xml file. Could anyone tell me the usage of it? Could I still use the following: my $SIO = Bio::SeqIO->new(-file=> $fn, '-format' => 'Tigr'); If so, SeqIO.pm must be modified. Where could I get the new version of SeqIO.pm..... Thanks in advanced! Yue